My boyfriend checks out other women

So I just got into a relationship, like just got into one within the month, and um yeah he has a wandering eye like a mf. He’ll keep conversation with me, but he is looking at other women the whole time. Today this girl came in and he was staring her tf dowwwwn and eventually ended up turning around in his seat and watching her walk to the car. He probably thought he was slick or maybe I just look stupid af so he thought it wouldn’t matter. Then he “randomly” starts talking about how much he likes hair (she had big curly hair) I was like “don’t cry, don’t cry” in my head. The rest of the night was so beautiful but I can’t get that out my head.