What should I do with this guy?

So I have this guy that is in my team sport and he has a girlfriend that he has been with for 6 months I have a crush on him and I met him 4 months ago but he changed his approach to me about 2 months ago he followed me on IG 4 months ago and asked me for my SC 2 months ago and doesn’t follow anyone else on snap or Insta, he is constantly hanging around me when we are with the team, barging my shoulders, throwing my shoes and nobody else’s and helps me out with some things, showers me with social media attention and has even said I look “fancy” and wanted me to come out with him and his mates a month ago. I couldn’t go and hasn’t asked me for a while and he went quiet for 2 weeks with no contact and then started showering me with attention again and will sometimes only contact me and not his girlfriend. But when his girlfriend is around he doesn’t talk to me at all and snaps me every other day like crazy expect when she is over and one day she snapped me and I asked him who it was and he apologised for having his girlfriend snap me but wants me to meet her this weekend at our sporting event and still chats to me a lot. She has also requested to follow me and nobody else on the team that her boyfriend knows so why me. Does anyone know what’s going on with him?, what does his girlfriend want with me? , does he like me? And is there possibly something going on with his girlfriend that involves me?

What should I do with this guy?
Post Opinion