Hey guys.. this is my first post in this forum

I have a girlfriend for 6 months now. Shes the type of girl doing anything im asking for and shes dying for me, while i am together with her i had sex with another one 2 months ago. Im 19 and my gf is 22 shes helping me with money..school... etc ... but sometimes i feel like she doesnt have the character which i feel like is right for me. She had a bad past ppl were saying shes a slut etc and a lot of guys even guys who i know who live in my area used her for sex... Its hard to forget that she had sex with so many guys before me idk it feels weird. In my eyes shes a 7 out of ten shes tanned pretty curves etc. but i feel uncomfortable in this relationship i kind of want to break up because i cant handle the fact that other guys have nudes of her on their phones or anything else but i also dont want to loose my advantages of her and i also love her. But theres a lot of things which bother me like she cant leave the house after 10 pm etc because of her parents who are very strict. We have a lot of car sex and 2-3 a week at my place. While i am in this relationship there are a lot of girls texting me like just being curious about what im doing etc that never happend before. So whats ur opinion friends