How bad is it really? Were you madly in love with your significant other? Or is it just a comfort zone thing? Did you somehow see this coming but didn’t want to acknowledge it? Or are you secretly relieved it's over? Whatever the answers to these questions may be, you need to be extremely focused with the questioning process to get clear answers. This will go a long way in dealing with the situation before you move on to the next step.
Whether you broke up or if he did it? Ask yourself if the reason, he gave you is valid or there is more to it. While it’s okay to take some answers at face value, some need to be pondered over a bit more. Put your Sherlock Holmes hat on, if you like, but without getting paranoid over it.
After you’ve spent some time alone doing the processing and have a clear perspective of what’s happened, reach out to a close friend or confidante. They might have a fresh perspective and may help you see things better.
Believe it or not, very often your dog, your best friend or that unexpected recently acquired acquaintance cum friend who is also single might actually make for a fun evening. Plans that end up being made impromptu with like-minded people (or animals) can actually make you feel all warm and fuzzy.
Everything that you couldn’t do, or didn’t do when you were with him, you can do now. Set goals for yourself. Budget and allocate time and space for opportunities that have opened up for you.
There will always be people who must have dropped off your radar due to some reason or the other. Now that you do have a bit of space where connectivity is concerned, use this time to reach out to old friends and acquaintances.