My mom dated a 22 year old when she was 42. They married 3 years later and are still happily married. 28 years later (she's 73, he's 53). I don't think age matters. He was mature and knew he what he wanted in a marriage and life. They are still very lovey dovey towards each other and I couldn't think of a better man for her.

My step-dad is only 8 years older than me, but has been more of a father to me and my siblings than our biological dad ever was. He's was and is wise beyond his years and is supportive as any husband and father could be.