At this time, rely on friends and family. Try to spend with them as much as possible, but don't talk about the breakup and focus on other things.
Not to humiliate! Don't try to return it at any price. Create your own pride and in any case, don't ask him to come back to you. When will the first stream of emotions, you will be ashamed of himself at the memory of his humiliation.
Reorganize your life. Find a new leisure activity. Try new activities: start a fitness club, sign up for language courses, arrange to work as a volunteer... Do what you like, and everything to do with it feeling good. Your self-confidence will receive a much-needed boost, you will understand that it is not dependent on your ex and meet new people.
Learn from your mistakes. Do not reproach and do not blame yourself again and again. It is likely that you made some mistakes (as well as your partner), but now you have a great opportunity to learn from them. Don't think about what you could do differently, but rather about where to move their boundaries in the following respects.
And go on dates. Do not pass up meetings and quietly go out. This, of course, may not be fatal meeting with your potential future husband, but why not enjoy a pleasant evening in the company of men?