Should I worry about her ex
Sorry if this is a bit long but I appreciate any advice. We are both in our mid-twenties and been together 9 months. I met her 6 months after she broke up with her bf of 2 years and the guy that took her virginity. When we both met, we weren't looking for anything but things worked out and here we are. From early on, I gathered hints that this ex was horrible to her. Then, a couple weeks ago, she was acting tense during sex (which she has often anytime I go down on her). I asked her what was wrong bc she always does this. She was hesitant at first and then told me her ex told her she was rough and beat up down there and was loose, horrible in bed. I don't like talking of exes but I felt I needed to let her talk and explain to her there is nothing wrong with her. She told me about how he mistreated her, never paid for anything, etc. and that he was a really messed up person in the head. I asked her why she put up with that behavior and she said she thought she could help him and felt stuck where she let her virginity go. I did some facebook creeping and this dude is your class A douchebag and I'm surprised she was with a guy like that. She said she was always the good girl and thought the idea of being with the bad boy was cool. She said the sex was lustful and just an act and that's her one regret in life. She has said many times she wish she would've waited for me. Sometimes after we're finished having sex, she cries and tells me how perfect everything is and that I'm perfect in every way. She would do anything for me and is great. However, ever since hearing this info of her ex, I got a little paranoid thinking things like "did she never lust for me or find me as attractive as her ex" or "did she get off more from her ex". I just have a hard time understanding anything bc she tells me she's never been a sexual person and has never even masturbated. Sometimes I'd even question if she had an orgasm so asked her that. She said she never did with her ex but has had one several times with me. I didn't know to take that as her being nice or if she "lusted" and actually had them with her ex. This has brought me some insecurity mainly due to the fact that I can see myself marrying this girl but I don't want her to have some longing for her ex. I know the guy tried to get back with her twice with her looking the other way twice. I just want to be the best in every way for this girl if that makes sense.
What do you all make of all this? Am I just having some insecurity issues or should I legitimately be thinking about some things?