I know, DM.
I get that sometimes. There are days when I just ache for a proper hug. Or just a shared in-joke. To spread the load. To have someone to cook for (or cook for me) rather than concocting a meal for one that isn't actually a meal and a half because the ingredients look so pathetic in the pan (and then doesn't help the waist-line). I get it.
I just see it as part of my training. Like I said on another thread, if I live to 84 and represent that as inches i.e. 7 feet, this part of my life isn't much. Lots happened before and there is plenty of time for lots to happen again.
Do you have friends around? I have become adept at gaining from my friends and family those things for which I used to rely on my partner. That has meant that I have closer, more real, relationships with those people and, as a result, means that I am in a healthier place to start a relationship in due course.