Ultimately, if it is a relationship between two consenting adults, it’s for you to decide if the age gap is an issue. I know quite a few consenting adult couples who have age gaps between 10-20 years, that have sustained successful relationships.

However, the fact that you are asking this question, and seeking the opinion of others, would imply that you yourself have doubts. If you have doubts, then I think you have already answered your own question.