So I have this girl that I'm pretty much in an LTR with but there is one large problem, and it makes no sense according to basic TRP knowledge or even mainstream psychology. This girl is having a problem dealing with the amount of sexual partners I have had in the past.

We met online, and I didnt know where it would lead to, and eventually we started talking about sex. She was very curious about what I can do in the bedroom, who I've done it to, how I know I'm so good, ect. I didnt hold back, and it did make her horny initially. Meet for a date, actually like each other. Find out she was virgin till 21 (she's now 26) and has only been with a few guys that were all her boyfriends. Tells me I'm crazy, basically hints that all the sex she ever had was pretty vanilla, and allows me to begin heavily seducing her. A week or so later, we have sex. She was very awkward both before and after, although appeared to greatly enjoy the act.

Anyway this sexual weirdness has continued, unless she's very drunk. We had a talk about it, and she said that she just cant get the idea of me having sex with so many women out of her head. She said she thinks about it all the time and it bothers her. She said there is no way she can compete and that she feels weird about herself sexually - doesn't know how to ride well ect. This girl is very attractive, the sex with her is good, she's actually quite good at giving head, and really has no reason to worry. She was not raped, I've dealt with that before and can tell, idk if maybe its a body image issue thing or what.

I thought women generally want a man with a high count as they know hes desirable. This girl is the exact opposite, (only had sex with nerds before me) and her insecurities are really getting to her, and to me. Any thoughts or advice on this?