He attempts to comfort Marnie, and scolds their critics. There, he meets Marnie, and the two connect through their mutual love of music,. Desi was a reccuring character on HBO's Girls, but was promoted to main cast for the fourth season. He goes to Marnie's apartment in the middle of the night and claims that he is the one who broke the relationship off. In the season finale , it is Desi and Adam's opening night. After, they eat lunch together, where Marnie displays distress over their lack of a relationship.