Is the age gap weird? How would I reassure him?

I'm an 18 year old girl and my boyfriend is 22 years old. Honestly when I don’t think about his age much he reminds me of myself so like in the back of my mind he’s my age. It is very early in our relationship and in my opinion our relationship is very healthy he is a complete gentleman. He expressed to me that even tho I’m legally an adult he doesn’t want to seem like a creep to his friends. He said when he talks to me he doesn’t rlly think about age just that I’m a person. And I agree. We agreed that it’s our relationship and what other people think doesn’t matter. And yes he is 4 years older it doesn’t bother me really because I know him for him. But how would I reassure him, I don't want him to feel uncomfortable or anything. we also established our age difference isn't a deal breaker. many age apps are larger and are still considered normal ig it feel weird bc he's in his twenties and I'm still considered a teen.

Is the age gap weird? How would I reassure him?
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