First of all, I want to emphasize that the success of reunion depends on many factors, including each other's emotional state, reasons for breaking up, time and effort, and so on. It is one of the ways that some people try to increase the possibility of getting back together by taking advantage of their ex-boyfriends' small moves after breaking up, but it is not suitable for everyone. Please use it with caution.

Here are some possible ways:

1. Keep in touch: After breaking up, you can try to keep in touch with your ex-boyfriend. You can maintain certain communication through SMS, telephone and social media. This will let you know his recent situation and keep your relationship consistent.

2. Pay attention to his social media: If you have the same friends or social media accounts, you can pay attention to his recent situation and understand his living conditions. If there are some special moments or birthdays, you can send some blessing messages or small gifts to let him feel your concern and warmth.

3. Confession: If you feel that your emotional state allows, you can confess to your ex-boyfriend, for example, you still love him and miss him. However, it should be noted that this kind of expression needs to be sincere and appropriate, and cannot turn into excessive complaints or force him to accept your feelings.

4. Show your growth and change: If you break up because of some specific problems or contradictions, you can show your growth and change on these issues. For example, you used to be willful or emotional, which can show that you have become more mature and stable in contact.

No matter which way is adopted, the reorganization needs the joint efforts and time of both parties. Sometimes, even if you work hard, you may not be able to get back together, so please keep an open mind and patience and accept the possible results.