quoted
"And If it matter, he looks straight. At least I saw girl rubbing his belly(in shirt), and he expressed no annoying but no pleasure though.
I'm bi. But I want to be friends first "
indicates to me the author doesnt know the answer to this question deoxys
there is no easy answer to this question , making friends with people isnt really that difficult if your outgoing and have things in comon however harder if your on the shy side.
As for " emotional attraction " i gather he is a year younger than yourself however is working in your computer class " this leaves the question to the possibility of a well documented and comon attraction to a tutor " im not trying to belittle you or your emotions in this just pointing this out so you can check your own feelings.
all said and done you want to be friends first , this is sensible and by being a friend you would actualy find out if he is the same way inclined as you are , or if he is streight. This would save a possible very aquard situation.
best advice i could give is be yourself , if he wants to be your friend he will be.
hope this helps