Still being intimate with ex if starting over fresh and as friends?

My daughter’s dad and I were dating for a long time before breaking up 3 years ago the first time (we kind of just fooled around after getting back in contact 6 months afterwards), since then we’ve had our daughter (7 months old) and we’ve been okay. We spoke yesterday and he said how he wanted to start over as friends and put the past behind us, basically a clean slate and meeting each other all over again. But still being sexual with each other, would it be best to put a pause on that since we’re “starting over fresh” or it doesn’t matter? I think so but I don’t really know.

Still being intimate with ex if starting over fresh and as friends?
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