Signs of a guy being an a-hole/waste of your time???

What are the signs of a guy playing you? Truly just give me signs - any will do.

I truthfully think I’m just worried b/c this guy is extremely attractive and almost any woman that we are mutual acquaintances with is obsessed with him so I’m concerned I may just be another notch on his belt (this is probably insecurity talking, but would still love to hear your opinions)