Hobosexual

Definition:

A person who lives like a gypsy going from new relationships, parents, and friends - they never have a place of their own, making them a hobosexual.

Exemplification of usage:

Me: Well, I kicked Larry out last night. He's got to find a place to stay. Her: Where's he going to stay? Me: I don't know, he's never had a place of his own, he just bums off other people. Her: I didn't know he was a hobosexual.