I have been in your spot myself, most of us have. Az's advice above is great... 'fake it til you make it'. I used to be in a similar spot, wanting to reach out. The way I think about is like this (from help with people on this board), what is the goal of this? Will I feel better after (probably not)? Does this help me move forward? Does it help me DB'ing? Then I would wait a bit and go do something else, something to take my mind of it. I would workout, go for a run, start texting friends, hell even clean, then I could usually resist the urge.
Then, eventually, your brain becomes re-wired a bit. That need to text, call, email or whatever goes away. I still think of my wife from time to time. But those thoughts almost never result in action.