I don't know everything about your sitch but I do know that trying to figure out what life is all about post-d is difficult.
The friends thing is hard for me to navigate too. I've mentioned it many times on my own thread. The she and I have a cordial relationship and limited exchanges. We stick mostly to business. I feel I'm the one who probably set the boundary. It's tough even when we have a good exchange because it brings up the past and leaves a sad feeling.
So he brought you something when you were sick? That was kind. The she also took care of me for part of a day recently when I had day-surgery on my foot. For the reasons above it was awkward at times. Accept the kindness, be thankful, and don't attach too much to it.
Div is like an injury. But you will heal, you will walk again, you will run and jump again. And at times you will forget it ever happen. Instead of waiting for that day, celebrate the each of those little steps. Stay strong.
"My actions are my only true belongings. I cannot escape the consequences of my actions. My actions are the ground upon which I stand." Thich Nhat Hanh