I really need help!

 You know how people say when you see or meet the "right " guy, your knees lock, You gotta pee yourself or you get super major butterflies, And there is a voice in the back of your head saying "just tell him" or something like "make a move..." (With a kiss or by touching him. You how people say, he is the "one" if when your hands touch you feel like the world disappeared and your flying.. 

Well watching Jack (this guy i used to be best friend with and I've been crushing on since 3rd grade) today in the play made me feel like that and then seeing him kiss Alyssa, (biggest slt and bitch ever!)  idont know why but I just started crying.. Is this normal?? I'm dating Ryan though. Ryan makes me feel like that all the time! I'm crazy in love with Ryan! And I know it! I'm just so confused on why I had this feel for Jack again. I'm over him. He said no to my questions. God if I'm falling for him while I'm in LOVE with Ryan, ill shoot myself. I'm OVER Jack! I'm sure of it. Well I just sure hope so! God idont know. I need someone to talk to, I'm kind of sick talking to my freaking journal...