Relationship are integral part of our life, most of the people at least experiencing it, and most of them also experiencing a high tide in relationship, and often ended with breakup. After that usually we will facing a phase when we need to put the past and move on by trying to put an end our past comfort that we used to have it, and starting to back in reality of single life. Often, we're having trouble on how we able to move on, or don't have a clue how to start.
I've my own experience with this kind of matters, I'm not saying that mine is good, but at least can give you a different perspective when dealing with this matters. Some people find it weird but at least I can try to explained with reasons, to make it more make sense. Than you can decide.