What is love?

I was with this guy for a bit and now my sister is with him I dont know what to do I keep telling her how I fill about the hole thing but she tells me to get over it now I'm not the kined of girl who falls in love but I think I just did and now I have to...

sit there and wach it she just dont get it,like I cant stop thinking about him or any thing I dont know what to do to get over it how can I take all this in I got so much going on in my life and I dont need this to and I cant get over him case hes always here he even gos to school with me and I go to night school tora knows him caus I brote him home to meet her and my mom I dont get any of this just tell me what to do.plzz.how can I get over this??

You don't get over it! Win him back! He was yours first,and he'll be yours last!
Hope this helped! - <3 - Storm!