The age gap is NOT something you should worry about. If you have open communication and he has expressed that having kids is not a deal breaker, then take him at his word.

As for the age gap. My mom met my step dad when she was 42 and he was 22. They have been married for 29 years. My step-dad expressed that he was happy with the family she had and that having a child for him was not necessary. Of course the age difference as you get older will be more noticable but if you have a loving, considerate, faithful partner who shows you affection and security then age won't matter. They are going to continue to love you til the end as they promised.

If you are still questioning his words, then dig deeper. Why do you feel this way, does his actions say something different then his words?

Best of luck!