I've never been into lying, I lack the imagination and CBA. However I split from an eighteen year relationship nearly two years ago and I've been pretty much single since.
I think it would be much easier to describe myself as divorced, even though it isn't strictly true. We have children and we shared property. It makes me feel less silly for being with someone all those years without ever being married to them.
AIBU to refer to myself (informally and casually) as a divorcee? Explaining feels too exposing at the moment.