sex scenes and boyfriends

I am so over getting angry/self conscious when a nude scene of a girl appears.. I used to have no issue watching them but ever since my boyfriend and I have gotten serious I get so angry.. scenarios:if I was at work and he watched a movie with naked girls in it... I would go crazy
I never say anything but I need some help from my fellow ladies who maybe have over come this or how to not think to much of it.. it's making me look up movie reviews before even seeing a movie and I sound crazy!!!!