I really like this guy but i dont know if he is bisexual or not?

u really would'nt know in this situation..let's say take it or leave it..if u willing to take a risk that u might losing him or u guys might be a couple..well who knows?..there's nothing much i can advise u..but if i'm in ur situation..well im already 21 and becoming more expert on how to know this kind of people..maybe i will know if he's bi, gay or straight..