A decent friend of mine recently married someone with a similar age gap also...no problems with their relationship. Their parents apparently disliked it at first until they saw them together and saw how well they go together. And no one goes around interviewing each other on their age. We can just tell people we're 10 years apart and no one would ever know. We look about 10 years apart anyway...not 15. Like I said, no one is walking up to her and saying "hi, nice to meet you, how old are you?"