I love my dh to bits, we hve 4 dc and are very close and have been together for 16 years. However, I have to say that recently I am starting to be aware of the age gap (16 years) for the first time , he turns 50 this year. I wouldn't be without him though, ever.
I'm maid (matron?) of honour at my BF wedding in 3 weeks too, she is 35, her husband to be is 74! Yet I've never known a happier couple. They have turned each others lives completely around. She is painfully aware that they will have a limited time together though.
I think I'm trying to say that if you are perfect for each other and love each other, then any age gap issues can be worked through.