Did the breakup trigger depression in you?

I broke up with her around three weeks ago after we tried it twice (shortly after New Year’s) and both came to the conclusion that we can’t give ourselves what we need.

She said the whole time that she wanted to do the work, be together with me and work through all the issues we had, yet nothing ever changed in her behavior or her actions.

After the second try, I had the lingering feeling of being alone in this and not feeling validated enough by her. She also apologized later for her lack of communication and clarity.

Nevertheless she was very firm about her never contacting me again after I blocked her right after the breakup and we haven’t spoken since.

Now I’ve seen her on different dating apps which made me feel pretty miserable (even though I’m there too).

Even though I was the one who broke up the second time, this whole situation lead to me having a minor mental breakdown at the weekend after realizing how lonely and sad I still am about everything and how we will probably never talk again.

In total the breakup triggered deep seeted feelings of loneliness, shame, sadness, anxiety and depression in me and I don’t really know how and when this is getting better.

Did this happen to anyone here too and how long did it take to recover from this?