If it's clear that they're never going to approve, then you have to learn to not let their opinions bother you.
You might want to turn down every invitation to hang out with him and his friends, since they're all so much older.
You also run the risk of making your man feel like an old man, which could be awkward for the both of you. Many young women are attracted to older men because of their great conversation.
This is your chance to talk about all the nerdy things your friends your age rather not talk about. Because an older man is literally in a different place in his life than you, he may eventually through some changes that you are yet to experience.
Some of your friends and family members aren't going to approve of you dating an older man.
If their acceptance is important to you, then be patient and explain to them why you love him.
His age doesn't mean that he gets to make the rules.
He shouldn't always be the one deciding what you'll eat and what vacation you'll go on. He doesn't get the upper hand just because he's a bit older.
No, that doesn't mean that you have to stop playing video games and blowing bubbles.
He has more life experience, which doesn't necessarily make him smarter, but it does make him someone worth listening to.
The next time he tells you that you're doing something wrong with your career or friends, hear him out instead of immediately getting mad. When you're dating someone your own age, it could be hard to find an apartment together that you can actually afford. When you make a reference he doesn't understand, don't awkwardly move past it.
If you're going to date an older man, you have to understand that he has more baggage than you do, because he's so much older.
If you want to be with him, you can't blame him for having an ex-wife or child.
You need to be able to accept his past if you want the relationship to work.