Should i have sex with him

Ok so I've known this dude for a long time. He keeps makin offers to have sex with me, and im thinkin about doin it because I want to. he thinks I dont know how to put I do. I just wanted to ask anyone if they know any positions I should try to make him...

f*ck me at his best.

well personally I like being on top of mo boyfriend and just like riding him like a beast...he always wants me to be ontop of him backwards so maby you want to try that...I also like it when my legs ane up on his sholders hehe ;p