It's a bit small minded, but wouldn't it be nice to continue all your hard work and look FABULOUS. And really isn't it likely that if anyone is being asked out it likely won't be your ex, but you! If my partner and I broke up, which I really hope doesn't happen, but if it did I would want two petty things to be hotter and faster than he is, hence I would keep riding.
Also petty, but I recommend shopping, new gear makes everything better!