Why did he say this?! Just friends or something more?

there's this guy at my school who I've known for awhile now. We both have a lott in common but I never thought anything of our friendship. he's always been flirty with me and some of my friends thought that he likes me and we'd be cute together...anyways today I did something funny and he's like haha that's my girl. Is that just a friendly thing or something more...cause I don't think I'm his girl loll thanks!