Hi I was wondering if you know how could I get my ex boyfriend back

First its not a good idea to piggyback your question on someone else's. This can lead to confusion. You should start a new thread. So I've moved your question to its own thread.

Generally, you can't. What were the circumstances of your breakup?

Like Scott said what were some circumstances and things he did?
The punishment should fit the 'crime' but in a constructive non violent and non threatening way.