I know I should say Adam because he is being edited to present himself as someone of integrity but we don't really know much about Jason either. If he were older or more business oriented he perhaps he would come off differently.
He may be a fine person who is not making it yet in the business so living at home between industry jobs is what he needs to do. I am assuming here he is not actually a waiter but wanting to act.
So I vote for no one. I cannot see her staying with either of these people.
I can't see someone with Jasons looks staying with some like Melana. She will end up with an older guy with money I think. She seems older, no ingenue about her. Sort of an experienced air to her.