Girls hit on my boyfreind !! I'm not the jellouse type but this is just really annoying !!?

So me and my boyfreind have dated for an year and three months we are serious .... So let's get to the point my boyfreind is verry good looking !! He works at ambercrombie and it seems girls just cling around him I used to work their aswell but I got fired that's another story .... So last time I went to visit him I saw a girl pinch his butt!! I'm not the jelouse type but come on ! Im so not happy about this and they ask for his number and stuff he doesn't pay attention to them and I trust him but I'm not thrilled about girls like that they touch him and ask him to "sip them up" ugh! Ok so just give me your opinion what should I do ??give me advice:) thank you