When you're trying to get back an ex boyfriend, you need to know what's working (and what's not).
That way you can prepare for what you'll say when you do call him back, which you shouldn't do right away, either.
This gives your ex the impression that you've got bigger and better things going on in your life.
Jealousy is a huge catalyst for getting back together.
If your exboyfriend is nervous about losing you, he's going to want to take you back fairly quickly.
If you really miss him and want him back, you might come off sounding desperate or needy.
This is something you definitely need to avoid, so let his calls go unanswered and allow him to leave a message sometimes.
Don't be so available when he calls, and let him think you're out doing something most of the time he tries to get in touch with you.
These small moves will go miles toward hurrying up his decision to reverse the breakup, putting him back in your arms even faster than doing nothing.
It's safe and comforting for him to know where you are and what you're doing while he plays the field and tries to see what else is out there.