What would you do in this situation? What would you think?

Yesterday, I went to the bar with three friends of the guy I've been hanging out with lately, later in the night we gathered everyone up, and partied a bit at another house, one of the friends of the guy I've been hanging out with took me to a back room, hugged, then kissed me on more than one occasion. I told the guy I've been hanging out with about, because I was annoyed, and his response was, "I can really be mad since we're not dating. If we were dating, yeah, I would've punched him, but we're not so I can't really be. He gets like that when he drinks, just keep saying no, and pushing him away. He's pretty persisent." I mean, I know that if the guy I've been hanging with and I do decide to move on and date, it won't be a while.