There are no shortcut tips to get back with your ex.
In fact, you're going to have some kind of a detour if you even consider the idea of winning him back.
What "detour" are we talking about here? Well, it means you need to let the dust settle for a few weeks after a break up.
Take some time to engage in a sport or creative stuff while allowing simmering emotions to subside.
A few weeks after a break up, emotions are still high and it would dangerous if you attempt to contact him during this period.
Also, you wouldn't be able to handle things maturely because your mind are still influenced by unnecessary post-break up sentiments.
After six weeks or so, you may start thinking of ways on how to best approach him.
Consult online guides on the tips to get back with your ex to have more insider info about this subject.
You may leave him a simple note in his office asking him how he's doing and if he can accompany you while visiting a relative or something.
Be creative in coming up with an idea on how to contact him during this fragile stage.
Go easy on him when you meet him up.
Avoid discussing anything related to the break up.
Everything is sensitive at this point so it is best to avoid heavy conversation.
As time goes on, your instinct will tell you when to best open it up and discuss with him the possibility of getting back.