Not sure if it helps but I went through the exact same thing about four months ago. I’m 31, had been with my girlfriend six years and we had a house and a cat. Out of the blue she said she’d fallen out of love with me. Hit me like a ton of bricks but four months later I’ve got a nice central flat, a new bike (or two), a healthy sum of money (she bought me out of the house) and am absolutely loving it. My tips would be:
Go crazy for a while – blow off some steam.
Ride a lot.
Book a holiday (I’m off to NYC this week).
Try online dating – there are lots of amazing women out there, and you can be up front about if you’re looking for a relationship or simply a bit of fun.
Remain positive and polite to your ex throughout – although I was gutted, I didn’t see any point in souring the situation further.
Good luck 🙂