<human>: My ex and I broke up about a month ago, mainly doing no contact during this time. I think we maybe spoke once or twice. However this previous weekend, we attended two parties one on Friday and one on Saturday night.

On Friday night I was very nervous about seeing him and tbh I would have rather avoided him completely. However, I heard through my friends that he was leaving as I had made him feel unwelcome, so I approached him and let him know there would be no issues between us if he stayed. We then got talking and got high together. I feel that we had made peace and could possibly even consider a friendship. We texted for sometime after the party, both saying we missed each and was imagining me in his head. 

The following night we both attended another mutual friend's party, where I gave him the Christmas presents I bought for him pre breakup. He offered me weed and to get high with him, I assume out of guilt that he did not get me anything. We then smoked together, and somehow one thing lead to another and we ended up having sex. It was completely consensual, he made the first move, although he did stop several times to say we probably shouldn't do this, but then continued anyway. He texted me again once I left the party, offering his friend to sober drive me back to the party so we could spend more time together.

Now I am certain neither of us want to get back together, although it is clear there are still strong feelings of love and lust toward each other. He is now, however, ignoring my messages and has gone back to no contact. I feel extremely used, and while the sex was just as much my fault, and a stupid idea, we can clearly be around each other without any issues. I feel very hurt that he would sleep with me and say all those things and then act like this now.

It appears to me that he cannot repress his feelings when high/drunk but when he is sober tries to do the logical thing. 

I am just not sure the appropriate way to respond, should I even attempt to sweep our past under the rug and make amends or just cut him out of my life.

Provide a brief overview of the text.
<bot>: My ex and I had sex when drunk and high at a party after 1 month of no contact, now he is ignoring me and I am not sure how to respond