stalker boyfriend

Iris

So I have been having this big problem with my boyfriend for the past three years we've been together.. he has wandering eyes.. and Everytime I try to confront him about it he calls me crazy and throws a fit.. Last night we went to the store and as we're walking to the isle of things we need this short plumpy girl walks by with these Daisy dukes on and her ass cheecks we're hanging out the bottom. something I know he likes to see. I go grab the things we need and when I turn around he was gone.. when I tried to find him I saw him going in the direction this girl had been going. she was in the make up isle, where my man doesn't belong but he stayed in that area.. pretending to look at toys that were not in our sons age group. So of course, I started to get upset. why is he over here and not with me? he diliberatly went in the direction to look at the girl. I huffed n puffed about it and went back to get one more thing.. I can see him trying to look around for her. He then pulls me to the side and makes up this story.. " So I saw this guy I used to Kno in high school, that's why I walked away. He got really bad into alcohol and drugs" so I asked him what his friends name was.. He paused for a second and looked away and said... "Alan" with a smirk on his face. I could tell he was lying so I said hmm Alan huh.. interesting. We then go to the checkout line.. where we run into this girl again and he just can't stop looking at her. I can see him staring from the corner of my eye.. Irate, I just ignore him, trying not to make a big deal about it, but i just can't change my face. I'm pissed. I can't believe he would make up a story and think I'm going to believe it.. When we both know what's really going on. Needless to say we are not talking to each other right now because I am just so disgusted with him and he is going to try and call me crazy and deny the whole thing if I say something to him. He knows why I'm upset but he wants me to talk to him about it. I told him I didn't want to say anything because of the past history we have in these situations, he throws a fit and makes me feel terrible for even thinking he would be so desperate to follow someone just to stare at her ass cheecks hanging out her shorts.. Idk what to do..