ughhh

So I'm dating a guy and I'm really happy, with him but I've been told he's a big player he apparently was talking to a girl right before and kinda during when we started dating  the girl told him to F off,  me and him kinda recently got to a argument on this I know the guys think that he's a player things are going around social media about him dating me, pleae I'm begging I need help anything please!!!