<human>: Can you succinctly summarize the text in 1-3 sentences?

So my girlfriend and I have been together a while now, and she moved in after 2 months. We get along amazingly, and definitely have a spark. She is the sort of girl who I view as well out of my league. She's extremely attractive and nice, kind, caring, appreciatitive and pretty much everything I could ever have drempt of. My worry is that she doesn't seem to notice when people are hitting on her, and just assumes they're being nice to her. 

I've always struggled with trust in relationships, after I ended things with my last long-term girlfriend. She was always very secretive to me and overprotective of her phone for instance, and it turned out she cheated on me multiple times, which destroyed my trust completely. 

This is where I am not sure if it's me being paranoid and over-protective [which I feel it is] or if that's me defaulting as that's what I told myself in the previous relationship, and it was true.
<bot>: Feel like my girlfriend is out of my league, she gets hit on a lot, not sure if I'm the issue or if i should do something about it?