Hugs to you. It is hard feeling ignored.

It's hard to say if you are really being ignored or it's just your perception. It is interesting you can see a link with your breakdown 3 months ago and that you have felt this way since then.

My thoughts are that it can be hard work maintaining a social life, maybe it is extra hard work for you these last few months and any none response is painful?

I'd urge you to keep trying in small ways to keep social contact going, even if just little chats in the workplace, or with new acquaintances. Small bits of social contact really can help in my experience.