I really need advice? Ugh what do I do?

My boyfriend whenever we go to Walmart he goes to the same cashier. she's young and is Indian. He saw her walk in to her shift he blantenly checked her out as we were walking in the store (we've seen her there before). and he said "oh look there's the Indian chick" then he's like "let's go to her". I didn't think anything of it till now. He ALWAYS goes to her when we go there. A few weeks later my boyfriend sends a video of a naked chick to me dancing for NO reason. It hurt me, and told him that then he says "I've got worse on my phone". I dont know what to do.. advice? I know I'm stupid, but this is my first real relationship. he also follows half naked chicks accounts online, and I asked him about it he said "well they follow me first, so I say why the hell not and follow them back". I know it sounds stupid but this is my first real relationship, and I dont know if this is what guys do? Or do I deserve better? Will I ever find it? Not sure.. but I need help. Thanks in advanced.
I really need advice? Ugh what do I do?
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