It may seem like exactly what you don't want to do, but believe it or not cutting off contact with your ex can help a lot when you do decide to actively pursue a relationship with him. Rebuilding a life with him can be a lot simpler and easier after a term of about a month with no contact between you...and here are a few reasons why.
1) Usually when two people who've been fighting continue to be around each other when tempers are still high, it causes more problems. Separating for a month or so functions as damage control, keeping you two from lashing out at one another and making things worse.
After that month of peace, you and your ex will be a lot less actively hostile. Breakups spin a lot of emotion around, and once that's settled some real healing can begin...but not before. If you give yourselves this break, the results will be way more successful.
2) Friction aside, being too much together after a breakup can also make it feel like nothing's changed because of the breakup. Even if things are peaceful between you, still being together all the time cuts out a lot of the impact of being "separated." Your ex won't see the need to get back together, because he probably won't get the full feeling that you ever really broke up.
A couple quotes for you: "absence makes the heart grow fonder" and "you don't know what you have until it's gone." Being so close to one another for so long makes it harder to notice the great things about being together. When you two are forced to be apart, your ex actually gets the opportunity to miss you...and often that ends up making the situation sink in a lot deeper, and makes mutual agreement to get back together a lot easier.
3) Another benefit of being apart is that you have some time without pressure to organize a plan and figure out exactly what you need to do to get him back. Without him right up in your face, it's easier to think and make decisions based on what your reasoning tells you, and not what your heart forces you to do.
It's not easy to predict what your best course of action is for getting back your ex. People in this situation behave differently than you'd naturally assume, so don't trust yor first impulses when dealing with your ex. You need a real plan based on how things really work, and without it you'll be sailing against the wind, with a blindfold on.
So there you go. 3 reasons why it's really beneficial to start out your breakup with a true clean break. No contact means no contact...no phone calls, no text messages, no email...nothing. This can really help you out, and I recommend it to everyone just fresh out of a relationship if you want to get your life together and get your ex back.