Been there, done that. Ex-wife claimed to be 8 years older than me, was actually 11.From where I sit (sat?), the younger male has a much easier time dealing with unconventional age difference than the older woman.
Ours deteriorated into extreme, nasty, eventually pathological jealousy -- based, I'm sure, on the fact that she started stressing about a few wrinkles, grey hair, a sag or two. This stuff meant nothing to me, everything to her, she began fixating on the idea that I was on the prowl for some young thing. (I wasn't.)
And then that unforgettable day when the supermarket clerk told her to "let your son carry this stuff."
Sure, it can work -- and often does. But before you commit, be very, very sure that SHE is going to be happy and content 10 years from now....
andy