Few people get what we "deserve" in life. And that word is misused anyway.

I mean the dude obviously believed he deserved multiple partners. You disagreed so he lost you. Does that mean his life is as good as it gets for him? Is he now hollow on the inside because he couldn't keep multiple partners?

There are highs and there are lows in life. How long they last nobody knows, but we should enjoy what we earn.

Is this the best you can do in life? If you give up on it then probably. A common mistake is that people do stuff expecting a specific end goal when we should be enjoying the experience and letting an end goal forming naturally.

Exercise, hobbies, therapy, meds - they're a chore for you. They're not enjoyable so of course the end result is an empty husk. There's no meat inside, no joy, no love.

You gotta give up these expectations and value the experience itself. If sports and your old hobbies don't work, then try something new. But you gotta love it for what it is and not just use it to find love and then throw it away.