The last two people my partner has tried to make friends with have turned out to be utter scum.

I also seem to attract utter scum, I had to tow some crack heads off the local beach and tow them to work, I got their number and could have been friends with them but who wants to be friends with crackheads?

The other people my partner could be friends are in completely different stages of their lives (e.g. gonna be grandmas soon).

At this stage in my life (36) I've become weary of humans.