18M been about 9 months since me and my ex stopped dating.

I've dated and plated multiple girls but I always come back to miss my ex in particular.

I don't know what to do, not a day has gone by where I don't think of her and some of the moments we had.

To make it worse, she is apart of my social circle so I cannot just cut her out of my life 100%. Her name is always mentioned sooner or later.

I feel as though Im not entirely bad as I'm still focused on my mission, and am spinning plates, but no matter. She always pops back in my head. Weather someone in our circle says something about her or not.

How to stop this without cutting off my social circle?