"How long are we talking about between her initial refusal and her change-of-heart? How old is/was she? Bottom line ... you changed in the interim. You grew-up. Maybe she did, too. I wouldn't necessarily write this…"
"Really I think you are over thinking it.
She may not have been attractive to you, not because you where not a man. It could be she did not know anything about you. But since you asked her out and showed interest she double checked and…"
"If you stay with her, this is what you'll get: coldness (if that's what it is), flirting with other men, sleeping with other men, and lying about it. Also the thing about wanting to build a life with you, kids, &c.…"
"It exists, is not the norm, and there's a better way. But: where do you hope to go with this discussion?
If this isn't an Introduction, you can move it to another part of Forums (Relationships & Family?) even after…"