Is it normal to have older friends then you're actual age?

I am about to turn 30 this week. The thing is I never had real friends at the time when I was in a school or woman my own age ignore my existence or would talk shit behind my back. Even still now as an adult I have weird awkward silence with people my own age I just don't click. As of now I have friends that are ages 38-late 40's. One of my best friends she is 45 and we talked about everything. Even in dating my boyfriend he is 39 and I will be 30 soon. Or people from other generation are way less dramatic?
Is it normal to have older friends then you're actual age?
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