I know that when I broke up from my boyfriend I thought about getting back together several times a day. Sound familiar? All breakups are different, but here's some advice if you're wondering how to get him back.
First of all, don't be unpleasant. I know you're upset, but nagging and complaining are probably the worst things you can do. You'll only drive him further away. Try to be as nice as you can, unless you feel like a total phony. If the only way you can be nice is to fake it, then maybe you should find someone who doesn't make you feel like you have to pretend.
Keeping things pleasant makes the problems you had before seem not so important. It's often a good idea to tell him that you're guilty of taking him for granted. But don't expect him to admit that he took you for granted--at least not yet.
But what if your ex-boyfriend has a new girlfriend? This is a tough situation, but it's even more important than ever to remain pleasant. If you show him how great you are, you'll plant the seed in his head that maybe breaking up with you was a mistake. Personally, this was the best advice I ever got on how to deal with relationship problems like this.
On the other hand, if you're seeing somebody else just to make your ex jealous, it could backfire. It might make him think you're over the relationship. "Well, I guess that's that!" he'll think and move on. It's also not fair to the person you're seeing. Men don't like women who play games like this. I highly recommend a book called the Magic of Making Up.
If you're wondering how to get your ex boyfriend back, it's important not to lie to or trick your ex-boyfriendIt might work in the short run, but what if he finds out about it later (and he's likely to). Well, now you've lost him again! Probably for good this time. Deception is never a good idea.