My friends acting weird what should I do?

Anonymous
Im 30yrs old me and my friend Had been sleeping together on and off for 1.5 years now but in between and before that we’ve remained good friends we’ve still hung out. we hadn’t slept with each other in 10 months.. now we’ve moved opposite each other we’ve slept with each other a bit. He’s now acting weird. He has a girlfriend I suggested the other night my friends have told me to cool it off and I said they had a point. Straight away he replies yeah we should stop I wasn’t really expecting it since he had spent the whole weekend at mine cuddling me in bed etc. Since we’ve had that chat he’s not speaking to me like he used too he’s been so distant. I don’t want this to ruin our friendship which is why I put the feelers out to stop what we are doing. Him and his girlfriend have argued over me. The main point is I don’t want to loose a friend , I also felt myself falling for him a bit. Should I just leave him and carry on doing my own thing and see if he comes around?
Updates
+1 y
** he’s only had a girlfriend in the last few weeks before that he’s been technically single or non exclusive as far as I’ve been made aware**
My friends acting weird what should I do?
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