I find it unrealistic.
To my mind, expornstars have used up their quota of meaningless sex.
She should have statistically been numb and vacant to anything approaching a com'on.
Sure Dean is movie star handsome but he's also over 30 and living in his car.
Maybe it was his story in group, and she's really into creative types?
The first bloke she's seen in a year with an IQ over 80?
Maybe the porn industry isn't the meat grinder it used to be, or maybe the Church spent a long time putting her back together again, but I just didn't buy that they would hook up like that when this Winchester if Hemingway played the drums and not a typewriter.