I think he knows he treated you badly that night, but he’s trying to blame you for it (you went as friends, so you expected he would dance with you at least a few times, but he mostly ignored you like you didn’t matter to him). On some level he probably knew the sexual dancing with other ladies would upset you as well.
I’m sorry. I hope you managed to get home safe at least? He seems to have different expectations of this friendship than you do - neither of you are wrong, per se, but since the only person you control in this scenario is yourself, it seems you have a few choices to make - to reframe your expectations of him, to let him go and do your own thing or carry on as things are.