Other- I need to know why first. You specifically mentioned intercourse, so I'm going to assume other intimacies are still on the table. Is intercourse causing him pain or discomfort? Is there a larger physical or mental health issue trickling down? Does my body feel different? Is it no longer pleasurable? Has one or both of us had intercourse with someone else? Are we drifting apart emotionally?
There are so many reasons I can't say I'd simply walk away. I can say that vaginal intercourse with my partner is very dear to me, and we often initiate it in emotional moments to be closer to each other. I wouldn't give it up lightly, and neither would he. Would we be together without intercourse? Quite possibly, we waited 9 months before we first had it. Would we be as emotionally and physically sated? I'm not sure.