Gamer girls opions only?

I have a question my boyfriend likes to teabag on xbox but i noticed it to be with girls lately and he likes to do it when he thinks I'm not looking. I feel like this is flirtacious and disrespectful. & when i say im not ok with him doing that to girls he gets SUPER offensive and says he can do what he wants stop trying to control him. But i just feel hurt and disrespected