ok, i think i can help you out. i know exactly how you feel. my strategies are just talk to them, get to know them better. my number one way to flirt though is texting. i dont know if you have a phone and can text but this method has never failed me. and i used it at least 5 times... so jus talk to him in person then jus ask him "ohh really? can you text?" if he says yes, your in. then be like "ohh cool. can i have your number, maybe we could talk some time" i'm using this strategy right now...lol. so just mm me if you need more help or if it worked! hope i helped!!!