I need advice on this dude.?

So this guy has a girlfriend... but we text more often than not (except on the weekends cause I refuse to text him or text him back) and everyday he makes me wait on him so we can walk to fourth block together and so we can talk and so I can hug him - all his idea. And he flirts with me A LOT. Like one time he said he was going to get in the shower and I was like okay and then he got out and was like I didnt drown and I was like good and he was like what would you do if I did and I was like I'd come save you and then we talked about mouth to mouth and we were doing little winky faces and stuff. And he calls me babe sometimes and he is my city's star quarterback and he before every game he comes and talks to me, hugs me, and says "I'ma throw a touchdown for you, a long one." Smiles and then goes to the game. Super sweet. And I have really started to like him.... and my close friends have told me that they think he likes me, but I dont know... but I really like him. I dont talk about my feelings to any one that actually knows me or anything so I cant tell him how I feel. And it doesnt even seem like he likes his girlfriend like they walk together sometimes and I see em but he's never smiling until he sees me... now his girlfriend doesnt know we talk so yeah and I dont think she likes me but whatever f*ck her. So I was just wondering what advice yal can give me. Do you think he likes me? How can I find out if he does? How can I break them up... etc? (BTW - everyone thinks he is dating this girl for the image. Like this is going to sound bad but she isnt pretty but she is head cheerleader and he is star quarter back. So yeah. ) Advice would be WONDERFUL!!(: Thanks in advice. And please dont judge me!