Older women with younger men

Im only 5 years older than my boyfriend of 3 years. But not one person in HIS family knows that. I know theres nothing wrong with a little age difference when women are the older ones BUT im still lowkey a little embarrased for his family to find out. Should i be embarrased or not give af?? I met him when he was 19 and i was 24. Now he is 23 and im 28. I guess i get embarrased that im older cause almost everyone in my fam thinks its funny and make fun of me by calling me a child molester etc. Any opinions?