Piggle, don't worry about this kind of thing. The kind of person who would not develop a proper relationship for this reason wasn't going to develop a proper relationship anyway.
It's just one of those normal things in life. Most models are airbrushed.
The truth of the matter is that someone could always say something about even the most beautiful person as a reason to not develop a relationship.
I've never talked to some other guy who said "she is great in every way, if only she didn't have stretch marks." To be honest, I've never even heard a guy talk about stretch marks, it's a female thing to worry about that.