There's a lot of girls that just blend in together. You can't differentiate one from the other. Just a blob of desperate, average looking brunettes: Kari, Molly, Naomi, Erica, Lauren. I had to look up their names to even compose my comment.
Melissa = Deanna. Except Melissa has a hotter body, and she's more annoying than De. She is just as vapid and immature as her as well but at least DeAnna was a tomboy, had a bit of a harder edge so that added some charm to her, made her more likeable imo. I don't believe for a second that she's ready to get married or any of that, she's only had one serious relationship. I think Jason is just focusing on her perky personality and tight ass and deluding himself into thinking she's ready for marriage.