<human>: Okay Reddit, I need your help.
So I had this relationship with this guy a couple of years ago now. We were obviously quite young and it was quite dysfunctional. It fell apart and that should have been that. However after we broke up we stayed "best friends" and continued an on/off again physical relationship. Unfortunately I was never in a mentally healthy place and ended up being a crazy bitch and about a year ago things fell apart and my actions ruined the friendship, along with anything else.

However a week ago, at a party, he talked to me. He forgave me for everything and we chatted away, slightly intoxicated, as the great friends we had always been. Later in the night when we were sober we ended up kissing, and this led to us spending the night together. Though we didn't have sex as he said "it'll be more fun if we wait."

Now it's been a while, and I figured, if we were friends and attracted to each other, then we could start a physical relationship again...

I know people often say that it can't work, and especially between people that have had feelings before. But I am adamant that I don't want a relationship, just sex. 

So how on earth do I make this clear to him without sounding like a whingey or clingy bitch?

Provide a brief overview of the text.
<bot>: ex-boyfriend, teenage relationship angst, friends again, made out, I want sex - how do I propose that?