I guess I'm the opposite. I've been in relationships for the last nine years - since I was eighteen - with only one year off.
- One year relationship.
- Six year relationship.
- One year off.
- Six month relationship I'm in now.
It's definitely possible to be very happy while single. For me I think I would probably need some other support structures in place to really feel truly joyous though. A positive workplace and a good circle of friends / sports leagues would help a whole lot.