am i just too much in my head ?

im not dissing females of any shape or anything like that ... im not one to talk i use to be fit and my bf says im perfect how i am and he wouldnt chamge a thing about me yet i have no doubt and have seen how females that are more figured get his eye and even if he says other wise i can see the glances back and forth checking if im payimg attention or if we're watching a movie hes usually partially invested in his phone/ food / movie however someone or a group of females shows up on the screen and hes zoned in on the t.v. i personally am not one to just say its just a guy thing or its in my head ... maybe its just me being insecure but its not something im ready to just not bother with otr ignore cause its just a guy being a guy ...