The Importance of Age Gaps in Dating

Emily 29 years old Hong Kong. What do you think of considerable age gaps in dating? Let's say dating someone 20 years your senior. I am in a dilemma as my Asian family is very conservative. Age is just one of our concerns. We also do not share the same ethnicity. She is an observant Protestant and he is not practicing and nationality. He is also previously married though now has good relations with his former spouse and he has an upright character. Have looked up to you for years but would love your two cents on this.