MIMI MORS

so, i've known this guys for like 8 years now and i consider him one of my good friends.i have always liked him as more than a friend but i never had the courage to tell him. somehow he found out and then stopped talking to me for like a week.i understand that it was maybe cuz a lot of our other friends were teasing him but still.anyways,he never said anything about liking me or about me liking him and started talking to me again.i figured he probably didn't like me so i started talking to other guys but every time i would talk about another guy he would change.like when i needed help with something he would be like "why don't you ask your new buddy to help" i would just be like ok?and wouldn't understand if he was just saying that or if he was jealous.and then he always likes to tease me about things till the point i turn bright red. then he gives me this like wicked smile like one of those mischievous manga characters.but then the other day he was like you need to find a boyfriend and that just added to my confusing.my friends have tried to find out for me but i don't know,they asked him to rate me and he said 12,if its out of ten i would probably know but he wouldn't tell them out of what scale he just said 12. why is he so weird?anyways,one of my best friends says he does like me but i don't know to believe that.i would really like to know what he is thinking.please help.

here are some of his characteristics: chemistry teacher, rich, hot,rebellious, bully, kind, "perfect", athletic, talented. just to help you help me. thanks

given P4+6F2==>4PF3

how many grams of F2 are needed to produce 120 grams of PF3 if the reaction has a yield of 78.1%?