Does he like me? We're in the 8th grade?

[Bianca]

I'm 14 years old and the guy I like is also 14 but a few months older. For right now I'll call him Austin. Austin an I had been friends for almost 3-4 years now. He's liked me before but I didn't feel the same way so he moved on. Now I like him again and I need help. He stares at me in class and when I catch him he still keeps staring. One time he caught me staring and I looked away, but then he called my name and when I looked at him, he smiled. He's constantly looking to see what my reaction is when he tells a joke or says something funny. When I talk to him, he always leans so close that someone on the outside thinks he's about to kiss me. He flirts a lot but he also flirts with other girls, so that's just his nature. On this social media called "Vine" he always revines my vines. BUT, some days he will act completely FRIENDLY, which confuses me. However what confuses me the most is when he tells everyone "I don't like anyone right now." Is he lying?