I don't see a problem as long as both are of age. Bruce and I have a 9 almost 10 year age gap between us, and it never causes a problem. The only time we really notice it is when we discuss music or what happened in a certain year. He'll remember something when he was a teenager and I don't because I was only a little girl. My bio Mom and her husband are 20 years apart. She is 45 and he's 65. He had already been married, divorced and raised 3 girls by the time he married my Mom. He finds it a bit hard now, as my brother and sister are 18 and 20 and his other girls are close to my mothers age.