TL;DR: Title question, basically. What does it feel like to stop talking to someone at the request of another person?

ETA: Vetoes are unhealthy and bad practice. I know this. They do still sometimes happen. I'm asking about people who have experience with it, certainly not recommending it.

I lost a person I loved a little over a year ago and it's still bothering me tremendously.

The reason I was given at the time he ended things was that his wife was uncomfortable. Not entirely sure what his true feelings are or were because I've gotten a lot of conflicting information since then. Whatever they are, I know I must not matter too terribly much to him since he was so willing to remove me from his life and not look back.

He's got me blocked online but we still have to see each other somewhat regularly and I've been having an extremely hard time handling that. We pretty much only ever speak if we have to, per his request.

I try to keep my mouth shut and focus on my own life but there is a very ugly part of my brain that is not allowing that to happen. I feel abandoned and unlovable, though that's obviously more my fault/problem than anyone else's. I don't blame anyone else for doing what they need to to survive and be happy.

I'm curious what it could possibly feel like to be on the other side of this. Insight and perspective from others is very welcome.