J. T. Hellstrom and Colleen Carlton are fictional characters and a supercouple from the American CBS soap opera The Young and the Restless. J. T. was portrayed by Thad Luckinbill, and Colleen was portrayed by three different actresses during the pair's time together, including Lyndsy Fonseca, Adrianne León, and Tammin Sursok. They are often referred to by the portmanteau "Jolleen" by fans on internet message boards and in magazines. Many other famous celebrities appear on this show. Beginning as a controversial pairing due to the characters' age gap, their pairing would soon gain popularity, characterized as "Genoa City's sweetest supercouple". Former head writer and executive producer John F. Smith pushed for a story between the characters despite the unexpectedness and controversy surrounding them. Luckinbill's musical ability was an element in their storyline as the actor wrote and performed two original songs for the soap opera. The song "When You Say Nothing at All", performed by Alison Krauss, was also used during their storyline. Development Relationship The original storyline designed for J. T. and Colleen centered around an unrequited crush she feels for him. Luckinbill and Fonseca, the first actress to portray Colleen, thought their character's relationship would progress no further than friendship. Fonseca said that if they became a couple, the fun brought on by the "tug-and-pull" element between them could disappear. Luckinbill considered the age difference too great an obstacle to overcome, as at the time, J. T. was 18 years old and Colleen was 15. Smith later pushed for the plot to be taken further and the characters were paired romantically. Both soap opera critics and members of the show's cast and crew considered this a controversial and surprising move. Fonseca stated she "wasn't expecting it at all", and admitted that even former executive producer David Shaughnessy found the pairing "shocking". The writers used J. T.'s relationship with Colleen to bring out a more sympathetic side to him that the audience up to that point never witnessed before. Smith characterized their storyline as "taking this guy on the journey from wild college kid to being in love with this little high school sophomore". They also positioned Colleen as the aggressor in the relationship by scripting her as pursuing J. T., while he, in an uncharacteristic move, held off because of the difference in their ages. The writers "carefully navigated the development of this relationship, emphasizing its tender, supportive