Find out what went wrong. If you don't know why your boyfriend left without warning, you will spend a lot of time wondering. Call or email him politely and ask why he left so suddenly. If he doesn't get back to you, don't flood his inbox — you'll have to start letting go without an explanation.
Spend time being sad. There will probably be times when you won't feel like doing anything after your boyfriend leaves suddenly — and that's okay. Taking the time to be with your feelings helps you heal in a healthier way.
Escape into a world of fiction for a while. Check out your favorite books or movies from the library, or go to the movies. If a good film is playing, you may be able to forget about your boyfriend for several hours at a time.
Start new routines and traditions. Missing out on things you used to do with your boyfriend can be one of the hardest parts of a break-up, so try to do things you would have never done with your boyfriend.
Talk to your close friends and family members about the break-up. They can help you talk through the issues surrounding the breakup, and they can also make you laugh. Many women seek social relationships as a way to heal, so use this to your advantage.
Acknowledge that you and your boyfriend are not getting back together. The sooner you admit this to yourself, the sooner you will be able to move forward. Acceptance is a major tool in helping you recover from this trauma.
Date casually when you feel ready. Though you may not want another relationship, casual dates can be fun and can help you get over your boyfriend. Go at your own pace -- if you feel that your boyfriend's unexpected leaving is still weighing on you, take some more time out of the dating game.
- Try not to check your boyfriend's social networking profiles constantly — this will keep you from moving forward and only make you miserable. Blocking or deleting him from your networks may be useful.