Boys, help meee????????????????

Hey, so im in 7th grade and i really like this guy. He kindof flirts with everyone, including me. for example, (my names "kate") when i walk in a room he'll yell "KATEE!" haha and im jumpy, so he always scares me. Like he'll poke me or randomly turn around and yelll "kate" in my face haha. He had a gf though and had had 1 for 3 months so he is capable of being in a relationship, but I think they just broke up.(if they didnt i hav eno intention of getitng between them) so I rally want him to like me. I have his nmber, but becuase I took it from his/my friend, so i need him to give me his number so i dont look like a creeper if i text him.(he sorta knows I like him...like hes said to his friend "i think kate likes me") soo anywaysss help?? I REALLY LIKE HIMMM:( o and i only have 1 more week to get him number from him cuz then school gts out! hes in all my classes excpet hr!(lucky mee;))