True, true, true ... but I think you can only move towards the future if you believe in your future - if you trust that it'll be ok, that you're ok, that you deserve good things and that they'll come in time.

If you don't, and you fear your future, it's so easy to cling to the past.

Break-ups, especially one-sided break-ups, leave the 'dumpee' frightened of their potential future, making them cling onto their past even tighter.