Contact your ex. This may seem daunting, but if you approach it casually, as you would with a friend, it won't be nearly as scary. Send your ex a text, e-mail or even call her to say "Hi," ask how he's been doing and chat nonchalantly for a few minutes to break the ice.

Apologize for your part in the breakup and in what went wrong in the relationship. Letting your ex know that you've thought about the details of your relationship and that you take responsibility for your part in the problems will showcase that you truly care about him and recognize your faults.

Maintain a friendship by keeping in contact with your ex. Make sure that he wants to stay in contact too, though -- you can simply ask him if you feel comfortable, or you can pay attention to how he reacts when you get in touch with him. If your ex seems happy to hear from you and willing to talk to you for awhile, chances are he's interested in reconnecting.

Support your ex-boyfriend if he's going through a difficult time, such as with school or with his family. Also, reach out during holidays and special days, such as graduation or his birthday. This will show your ex that you remember special days in his life and are truly interested in how he's doing.