<human>: Can you condense the text into a few key points?

My girlfriend (25f) and I (24m) have almost completely opposite relationship histories. She has had many "lovers" while she is practically my first. We have been together for 3 months and things are getting pretty serious. (To the point where we're talking about moving in together) I really love this girl, but at the same time I can't really be sure she is the right one if I've never had the wrong one. We've talked about this and talked about taking a break and maybe seeing other people, but neither of us want to do that to each other. (Especially on my end, I couldn't see anyone else with the way I feel about her) It also bothers me that she has been with so many other guys while she is my first and I wish there were more experiences she could have with me together for the first time. And I feel like I'm having to compete with all these past lovers in every way, even though she has told me I'm the one she wants and none of them made her feel like I do. It also hurts my trust with her a lot considering a lot of those "lovers" were hookups because she was "lonely", and what happens if she gets lonely when I'm not around?
<bot>: Girlfriend (25f) has had many partners while she is my (24m) first and it puts a lot of doubt and mistrust in our relationship.