Danny was a brief boyfriend for Rachel on the sitcom Friends. They actually meet him by accidentally hitting him with a bug bomb. At first he looks like a homeless man, but because of the bug bomb he has to cut his hair and shave his beard.

And then he starts looking like a fairly handsome guy.

And him and Rachel seem to have a pretty good relationship.

But his major flaw is that he was really CLOSE to his sister. Most of their actions could be ignored (despite their weirdness) but Rachel leaves him when he realizes that he takes a bath with his sister too. They might as well set this episode in Birmingham, Alabama.