<human>: Can you provide a brief rundown of the text in within 3 sentences?

So i am 26f and my bf is 25m, we are about to hit our 1 year anniversary but my insecurities have been causing problems as of lately. The problems are not to bad but i dont want them to continue hindering our progress. He is the best guy to have ever come into my life and i shouldnt be insecure when it comes to him but i am because other past relationships and being hurt.
  Some of it also comes from me feeling like im not hot enough for him , and i say this because he has always been attracted to real skinny girls , and im not super thin . im not fat i am curvy and quite sexy in my opinion . but knowing he finds girls that are like 100lbs and have a thigh gap makes me feel not good enough.
  I dont want to push him away but in ways i  almost am. I feel intimidated when he talks to girls who are super thin unlike me and feel threatened. I know he wouldn't cheat on me i just get insecure over it and get afraid he may find them better. I just want to feel more secure and not so threatened all the time before i ruin my relationship. Please in need of some serious solutions to reigning in the insecurities before i lose the love of my life.
<bot>: 26F with major insecurities that are effecting my relationship negatively. Need advice on how to gain control over my insecurities so i dont lose the love of my life.