ORLANDO -- A man who says he was Orlando shooter Omar Mateen's gay lover is speaking out following the attack on Pulse nightclub that left 49 people dead, and dozens more injured. 
 
 In an interview with Univision anchor Maria Elena Salinas, the man -- who was called "Miguel" to protect his identity -- said he first met Mateen on the gay dating app Grindr. 
 
 Report: Man claims to have been Omar Mateen's lover 
 
 Univision reported the FBI told the network that investigators have spoken with this man, but a law enforcement official would neither confirm nor deny this to CBS News. 
 
 The official told CBS News senior investigative producer Pat Milton that Mateen was a frequent user of online dating sites seeking relationships with both men and women. 
 
 Men and women have come forward to the FBI claiming to have had a relationship with Mateen, according to the law enforcement official, and all of those claims are being investigated. 
 
 Man who is being called "Miguel" speaks in an interview with Univision about his alleged relationship with Orlando shooter Omar Mateen. His appearance was altered to protect his identity. Univision 
 
 Miguel said in an interview with Univision that Mateen, who was killed by police during the rampage on the Pulse nightclub early on June 12, was gay. He described his relationship with Mateen as "friends with benefits." 
 
 He said the sexual relationship lasted about two months, and they met at a hotel in Orlando between 15 and 20 times. 
 
 Miguel told Univison that he believes Mateen intentionally targeted Latinos in retribution for feeling rejected by Puerto Ricans. 
 
 AG Loretta Lynch: Orlando gunman's motive may never be known 
 
 "I believe this is not terrorism," Miguel said, despite investigators saying Mateen called 911 and posted to Facebook to pledge allegiance to ISIS during the rampage. 
 
 Rather, Miguel claimed Mateen was acting on revenge after being with a Puerto Rican man whom he later learned was HIV positive. 
 
 "He hate gay Puerto Ricans for all the stuff he did to him," Miguel said. "I believe this crazy horrible thing he did was for revenge." 
 
 Miguel said that Mateen's wife knew he was gay, and that his father forced him into an arranged marriage. 
 
 Miguel added that he and Mateen also talked about religion. 
 
 "He said Muslim religion is beautiful, beautiful religion, where everything is about love," he said. "Everybody is welcome. Gay, trans, bisexual... everybody." 
 
 Miguel said that Mateen never appeared to be violent. 
 
 "He was looking for love," Miguel said. "He was looking to be embraced." 
 
 Investigators have said Mateen "cased" the Pulse nightclub prior to the night of the massacre. There has also been speculation about the gunman's sexuality. 
 
 A U.S. official with knowledge of the situation previously told CBS News that club-goers have told investigators that Mateen had been at Pulse numerous times previously. Additionally, other media outlets have heard several stories of Mateen popping up and conversing with men on gay dating apps. 
 
 Jim Van Horn, 71, said Mateen was a "regular" at the popular Pulse nightclub. 
 
 Van Horn, a retired pharmacist, said he met Mateen once, and the younger man talked about his ex-wife. But Van Horn said his friends soon "told me they didn't want me talking to him, because they thought he was a strange person." 
 
 The Orlando Sentinel and other news organizations quoted other regulars from Pulse who said they had seen Mateen there a number of times, and many said he was at best strange, at worst a little scary. 
 
 "Sometimes he would go over in the corner and sit and drink by himself, and other times he would get so drunk he was loud and belligerent," said Ty Smith, who remembered seeing Mateen inside at least a dozen times. 
 
 What we've learned from Orlando shooting documents 
 
 Asked about his son's sexual orientation last week, Seddique Mir Mateen said he did not believe his son was gay. 
 
 "To me, that is wrong," Mateen's father told CBS News correspondent David Begnaud. 
 
 The elder Mateen said he learned of the speculation from news reports, but as far as he was concerned, "I didn't see any of it and I don't believe that was the case." 
 
 While it is still possible Mateen was just very closely surveying his chosen target for terror, former senior FBI profiler Mary Ellen O'Toole told CBS News that doesn't seem likely. 
 
 "This to me suggests somebody that may have had sexual identity issues and may have actually been struggling with the idea that he himself was gay and that would add a different motive and a different perspective on the case," O'Toole said. ||||| These crawls are part of an effort to archive pages as they are created and archive the pages that they refer to. That way, as the pages that are referenced are changed or taken from the web, a link to the version that was live when the page was written will be preserved.Then the Internet Archive hopes that references to these archived pages will be put in place of a link that would be otherwise be broken, or a companion link to allow people to see what was originally intended by a page's authors.The goal is to fix all broken links on the web . Crawls of supported "No More 404" sites. ||||| Breaking News Emails Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings. 
 
 / Updated By Pete Williams and Ayman Mohyeldin 
 
 Gunman Omar Mateen made his final stand at an Orlando nightclub, but why did he buy plane tickets to the West Coast — on a flight two days after the shooting? 
 
 A federal official confirmed to NBC News Tuesday that Mateen made the purchase for his family to travel to Northern California to visit his ailing mother-in-law. Wife Noor Zahi Salman's mother recently had an operation and was not getting better, and the family was planning on spending an extended period of time with her. 
 
 Related: Friend Who Told FBI About Orlando Shooter Omar Mateen Saw a 'Red Flag' 
 
 The tickets were purchased two days before the June 12 attack to travel to San Francisco on July 14 for two weeks. It's unclear, however, why Mateen would have bought the tickets if he was planning the shooting, only to die in it. 
 
 Mateen, who lived two hours south of the club in Port St. Lucie, was armed with a semiautomatic rifle and 9mm semiautomatic pistol when he slaughtered 49 people and injured 53 others in the worst mass shooting in modern U.S. history, police said. 
 
 Federal law enforcement officials said Mateen, 29, arrived at Pulse around midnight — but he left and then came back to the nightclub about two hours later to gun down his victims. 
 
 Investigators are trying to determine what he was doing for that two-hour period. 
 
 In addition, after combing through his electronic devices and doing interviews, they have not found anything to indicate that he was ever at Pulse in the days, weeks or months before the day of the shooting. 
 
 Related: DOJ Giving $1 Million in Federal Funds to Orlando First Responders 
 
 Right before Mateen had left the night of the attack, Salman became suspicious of her husband and pleaded with him not to do anything, a source told NBC News, although she did not call authorities. 
 
 A source close to the family said Mateen sent his wife a text message during the rampage, asking her, "Do you see what's happening?" After swapping texts, she tried to call him. Later, federal agents arrived at her door. 
 
 Salman, who has not been charged for failing to report her husband to law enforcement, continues to cooperate with investigators, a source said.
– The mystery that was Omar Mateen is still unraveling more than 10 days after the Orlando nightclub massacre. In a Univision interview that aired Tuesday night, a man who gave his name as Miguel came forward claiming to be Mateen's lover, CBS News reports. He said he met Mateen on the gay dating app Grindr and that they met in an Orlando hotel 15 or 20 times over the course of a two-month relationship. He said Mateen was in an arranged marriage and his wife knew he was gay. Miguel said Mateen carried out the shooting rampage after discovering that a Puerto Rican man he dated was HIV-positive. "He [hates] gay Puerto Ricans for all the stuff he did to him," Miguel told interviewer Maria Elena Salinas. "I believe this crazy horrible thing he did was for revenge." A law enforcement official declined to confirm or deny to CBS that the FBI had spoken to Miguel, but he said Mateen was a frequent user of dating sites and authorities have interviewed both men and women who say they had relationships with him. In another twist, a federal official tells NBC News that two days before the June 12 attack, Mateen bought plane tickets for his family, apparently including himself, to visit California, where his ailing mother-in-law lives, on June 14. Investigators say that on the night of the attack, Mateen first visited the Pulse nightclub around midnight and left soon afterward. They are trying to figure out what he was doing between then and 2am, when he returned to carry out the massacre. (Mateen spent $9,000 on jewelry days before the attack.)