I could have told you not to tell your families, but it’s too late now.
The world’s prejudices are not going to go away.
This means you must qualify the normal social aspect of a relationship. The bedroom, or his private home, is a good place to focus. And then, socially, you can go and do what you want. Owing to the age difference, people in the streets or at the movies won’t think twice about it, because it won’t occur to them that you are lovers.
The only people you have to keep it from is your family. There’s nothing you can do about it now, but tell them “It’s personal” and “It’s none of your business.”
I understand because I am old and have had young lovers.