Is it genuine feelings, and just his insecurity..or is he using me?

K-a-t-i-e
So this guy that I have been seeing for a while, we aren't really "official" But..we make love all the time. Has these girl's that are all over him..and that doesn't bug me too much, because I know he doesn't like any of them..but there is this one girl.

She started flirting with him, he sent me some of the texts that she had sent him. And, later..i checked that she sent him regular pictures, and he sent her some back. The night before him and I got together the next day and made love..I had to leave quickly, for an emergency. But that's besides the point.

He hasn't texted me all day today, but I checked again..and he sent this girl pictures of this new truck that he wants to get.

I sent him a good night message, and I didn't get a reply.

Sometimes he will do this, just because he need's space..and that's understandable. And I give it too him, I don't smother him. He is the one to normally text me first every day and it's sweet like "hello:)<3"

I know, that this more then likely isn't for just sex...i have his virginity, but we dated for 4-5 months before we broke up and got back together again. So I know there is feelings behind all of this, I can just see it in his eyes. He has already said that he can't really see any one else having sex with him but me...

My question is: Should I worry about this girl? ..him and I aren't officially dating, but do you think that this girl is another one of his "harem" girls. To boost up his ego a little bit..so he feels wanted. He always jokes around about these girls, and purposely tries to get me jealous..make it seem like he could get a lot of p**** if he wanted. I have asked him before if I was just for sex he said "no Katie..I'm a guy, I think with my d*** most of the time" & I have also asked him if he wanted to go get laid by other girls..he said "no, if I wanted to I would go get it"...and, he also says that he doesn't need to flirt with other girls because he has me..

Do you think this is just insecurity? And that he is just using them for an ego boost, or am I getting used?

I honestly don't know what to think, help! :(
Is it genuine feelings, and just his insecurity..or is he using me?
2 Opinion