<P> Barney and Robin start out as friends , but he falls in love with her after they impulsively sleep together in `` Sandcastles in the Sand '' . Throughout Season 4 , he struggles with his feelings for her , until they finally get together in the season finale `` The Leap '' . They become a full - fledged couple in season 5 , but they break up in `` The Rough Patch '' when they find that they are making each other miserable . They never truly get over each other , however , even while they are dating other people . In the eighth season , he launches an elaborate plan to win Robin 's heart ( encouraged by Ted 's future wife ) that ends with Barney proposing to her . She accepts , and they get engaged . The final season revolves around their wedding weekend . After much doubt and soul - searching , they get married in `` The End of the Aisle '' . The series finale , `` Last Forever '' , reveals that , after three years of marriage , they get divorced because Robin 's work schedule prevents them from spending any time together . They do not see each other again for several years , until Ted 's wedding . </P>
<P> Barney and Robin start out as friends , but he falls in love with her after they impulsively sleep together in `` Sandcastles in the Sand '' . Throughout Season 4 , he struggles with his feelings for her , until they finally get together in the season finale `` The Leap '' . They become a full - fledged couple in season 5 , but they break up in `` The Rough Patch '' when they find that they are making each other miserable . They never truly get over each other , however , even while they are dating other people . In the eighth season , he launches an elaborate plan to win Robin 's heart ( encouraged by Ted 's future wife ) that ends with Barney proposing to her . She accepts , and they get engaged . The final season revolves around their wedding weekend . After much doubt and soul - searching , they get married in `` The End of the Aisle '' . The series finale , `` Last Forever '' , reveals that , after three years of marriage , they get divorced because Robin 's work schedule prevents them from spending any time together . They do not see each other again for several years , until Ted 's wedding . </P>
what episode do barney and robin get together
what episode do barney and robin get together
The Leap
The Leap