The quick and dirty answer is that you don't. You man up, grit your teeth, deal with the pain and get on with the rest of your life. The other stuff is just window dressing to take your mind off the hole in your chest. Other women help, physical activity keeps you from stewing in your own juices, but in the end it is a fact you have had a loss in your life. It hurts, it sucks, and as soon as you quit hoping against hope that she will come back, the quicker life will have meaning once again. Don't ask me how I know. We have all been there. More than once. Sorry, but no quick fix. Pay the dues, learn and move on to the next adventure.