Stupid drunken kiss!!?

I went out for a drink with a male friend I have known for over 10 years, he is a lot older than me but we got drunk and had a few drunken snogs, I really don't fancy him, I was quite drunk but now don't know what to do!! In the morning (we slept in the same room but nothing happened) he said we should try being a couple for a few weeks (without ) to see what it was like! Bloody mad!! What shall I do, I feel a bit queasy when I think off all this now! xx