My boyfriend won't stop checking out girls in front of me, does this mean he finds the other girl prettier?

I am so upset right now and my self-esteem is at an all time low. My boyfriend of one year will not stop checking out girls in front of me and it is hurting me so much. He keeps promising to never do it again and then he does it again like the next day. I feel so unattractive and ugly when a lot of people tell me I'm beautiful. These girls that he looks at, does he find them more attractive then I? Does he think they are hotter, is that why he can't help but to look at them? He tells me he thinks I'm the most beautiful physically in his eyes, but this can't be true if he can't keep his eyes off of other girls in front of me. Guys, so what is it, does he think these girls are hotter then me?
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anonymous
My boyfriend won't stop checking out girls in front of me, does this mean he finds the other girl prettier?
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