Is it odd for a grown men to have had teen friends now 20 ? please read below?

So when I was 27 I made friends with two teen girls both 17 who I saved from a older guy max 25 who groomed them for money&sex. Both girls are now 20 years old turning 21 in a few months but I feel werid sometimes since i met them at a young age and both are the closest I ever been to two human people in along time. I am currently 32 met them when I was 27 and notice the behavior of Max. Anyway super close with them Befefore I do have other friends from ages 24-39 and don't have any other friends that young.
Is it odd for a grown men to have had teen friends now 20 ? please read below?
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