Okay so me and this girl have been in a relationship for about 3 months(For about 2 months it was just back and forth hard to get). When I met her she had something on with a guy but nothing serious.. Then I got in the picture and he fucked up telling her about another girl he made out with. She basically just let him go then and there. And this is basically where we started.

We are in the same social circle. And pretty much have the same close friends. So because of the social circle she decided she wants to keep our relationship a secret. As for me, I don't really care who knew about us.

She said she wanted to keep it a secret because she doesn't want it to be official yet but she still wants us to be exclusive.. (wtf? I know) My gut tells me she was honest about being exclusive. But for about 2 months I had a lot of other girls so I wasn't really that much invested. And to be honest if she would've gotten with another guy at that time it wouldn't have bothered me that much.

But lately in the last 2 weeks we spent a lot of time together getting to know each other more intimately and deeply... In about 2 weeks I have developed very very strong feelings for her..

And suddenly with the feelings came insecurities I never knew I had(My previous relationships was awesome. I wasn't jealous and my previous gfs never really hurt me and it was all healthy relationships that ran it's cause for stuff like different universities and the likes)

The guy she had something on with she had admitted, she had feelings for him,then(This was about 4 months ago) But after about a month she said I was the only one and she is crazy about me. Now this guy is dating one of her close friends and the friend said she and this guy started hanging out about 4 months ago(the same time he was flirting with my gf)

I know she and this guy speaks a lot but I never got the feeling she has feelings for him. Until he dates her friend, now she is furious about him flirting with her and this girl at the same time. According to me she has nothing to be angry about. She told me she is long over him and she was making out with me not long after him.

SO
1. Is it natural for her to be angry because he messed around with her 4 motnhs ago or is she jealous and has feelings for him?

2. Usually I was fine with keeping it all secret. But lately it feels as if she just doesn't want anyone to know about me for some reason. Any possible reasons for this?

Okay I have included all the details I know, some of which I guess are pretty useless. Usually I don't care about this stuff to much and I am rather laid back. But with this sudden realization of feelings for her this needless worries just piles up.

And I actually do have a lot of woman in my life. I do not think this is a result of neediness. I have 3 girls I see on a weekly basis just for sex, the thing is lately my mind is occupied with this one girl.