So what do you want to do tonight (this weekend, etc,)?
Anything YOU want to do!!!! That sounds so simple and silly, but I think it is the best part of being single.
You said the breakup was a relief, so now its safe to say you don't have to put up with crap anymore.
You can take time for yourself to get to know what you want in the future, for yourself and relationships. Take the time and energy that you spent with your ex and learn something new (take up a hobby that you've always wanted to do) or get back to doing something that you previously enjoyed.
Take time to let yourself heal. Do whatever it is you need to do to heal. Don't throw yourself into your work, or ignore your feelings. It will only come back to you later.
Good luck!
Can anyone tell I just got out of a relationship?
Feel free to message me if you need to chat.