Guys, How do I know if he’s flirting?

So there is this guy I know and I kind of like him and I flirt with him but he kind of is a player to, but, he does look at me when we are at school. He’ll like be looking at me and when I catch him he keeps looking at me then he will start to grin😀 I also keep eye contact🤭 he’s also looks at my lips then he will like bite his and there is this other girl he talks to and he’s ALWAYS LOOKS AT her but doesn’t do the same also’ and one time he winked to me but I just don’t want to get the wrong Idea.

Guys, How do I know if he’s flirting?
Post Opinion