Will I always be a jealous girlfriend as long as I'm insecure??

Examples of my jealousy. -My boyfriend just comment on a picture of how nice an ass was and I got so upset and hurt I told him if he wanted to look at other girls and make comments then he didn't need a girlfriend and I didn't think it would workout. -When my boyfriend re arranged his room a poster of girls in bikini that was previously over his bed (not visible during sexy time) over his TV and I was so upset I was incapable of being turned on while it was up there and I couldn't fool around with my bf with our thinking that's ht he is going o look at. Needless to say he took it down because of how upset it made me. And the list goes on......

I try so hard not to be jealous and I've been doing alright. But if there is even a girl around I think is prettier then me i can't even stand my bf talking to her for long!

I keep most of my jealousy hidden most of the time even though it kills me. I don't wanna be all jealous I just am uncontrollably and I know it's because I'm insecure but I don't know if I can ever be confident enough. So Will I Be A Jealous Girlfriend as long as I'm insecure ??