If you're feeling down, heathers, remind yourself why you left him! I've been single now for nine years and it can be awkward at times. The world of social interaction is largely populated by couples but there are distinct advantages to being partner free. You can please yourself what you're going to do/not do, buy, wear, eat, when you'll sleep, get up, whether/where to go on holiday (or not to go at all), who you'll call friends, how much time you spend with friends...
Embrace singledom. There's a lot to be said for the freedom of it.
Apologies, of course, to any GNer who may be recently bereaved or whose partner has left them. I've been widowed nine years and would not celebrate that fact. It was truly tragic. I'm realistic enough, though, to accept my single life and I don't mind admitting I will never pursue another relationship.