should i stay with my girlfriend if i dont think she's attracted to me? can she become attracted?

when we first started talking she wasnt attracted and it was evident in the lack of chemistry in our first few dates. At first, i wasnt too crazy about her either so it didnt bother me that much. ( + it was only a hunch) now i know she wasnt. plenty of women are attracted to me. their opinions are irrelevant at this point. this has me torn because i have a lot of pride but she wants me because i make her happy. I'd hate to be THAT guy. i myself have been in the situation of being with someone for their personality ( & the personality ended up not what i thought). in my mind if the roles were reversed i would not be there. The more i spend time wIth her the more im attracted. can this go both ways? And im not the type for false brovado. This hurts my confidence most definitely. We started having sex (and often) she seems sexually attracted and seems to enjoy it but that thought is still in the back of my mind. We're happy together and that should be enough and it definitely sounds egotistic but not feeling desired can be just as bad as not desiring someone. i dont see another girl being what she is for me. but i also dont want to ever feel in the position where (if i were to feel insecure) that i would stop ignoring the girl who are actually attracted and let them "pet my ego"