Thoughts on this immature kid

So my friend invited a few of her friends to play @this Game cafe (I was one of the ppl invited) we start heading back home on the way it’s me my friend and her guy friend who’s younger then us (maybe 19-20) as I am walking and checking my gps how to get back he pushes me with his bag and pretends FYI I BARELY KNOW THIS KID AND WE HE DID THAT I LOSE IT like why’d you do that and I do the same to him and he starts joking about fighting and I say mad seriously ok let’s goo I’m not playing games and I put him in his place I let him know that I don’t know him like that to be touching me and he says I overreacted I BEG TO DIFFER