I'm 39 & my girlfriend is 26. We have been together for 3 years & I can tell you it has been a struggle.
Initially, it started off as a casual thing, she was in a long distance relationship & I helped to 'fill the gap'. In my defense, she is quite hot & I had just split with my wife & was looking for an attached woman so that there would be no strings. A poor defense for nailing some guys woman - but the logic seemed sound at the time.
One day she came to me all smiles & said "I've left him" to which I replied "What the fuck did you do that for ?". In retrospect, my response could have been a little more tactful. Anyway, a truly auspicious start.
She's fine now, but she was like a kid at first, moody when she couldn't have her way etc. You know, the typical shit your girlfriend did when you were 18.
Like I say - she's 26 now, pretty stable, knows what she has to do to keep her man happy, dotes over my 7 year old boy who loves her to bits, is 5 months pregnant and I couldn't be happier.
Would I do it again ? No fucking chance - I've tamed my last tiger. Next time round, I'm keeping it over 3-zero.