Had sex with my ex?

We broke up two weeks ago and it wasn't a bad break up as far as those go. We mostly argued/avoided each other the week up to it and when he ended it we joked around like normal afterwards. He kept checking on me after and I cut him out for like a week and it freaked him out. We've acted like good friends again the last few days over text and tonight just kind of happened. Already had plans to hang out before this. It is mostly my fault that it even led to that. The sex was amazing. He grabbed my hand at one point and afterwards was super affectionate and we talked for a little bit about random things. I ended up kicking him out because I work tomorrow. He talked about giving me my stuff back tonight so there is that. Was this a really bad idea or could it be good too?
Had sex with my ex?
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