AITAH for calling my friend’s father a pedophile?

So, I’m 16 years old, I’m a recent graduate and we were taking a trip with all the classmates, unfortunately my best friend couldn’t come so I had to sleep with another friend and my teacher

We were in the room together with another friend and she was talking about her dad’s girlfriend, I wasn’t paying much attention to her until she said “My dad’s girlfriend graduated on a Thursday” I was curious and asked if from college. The answer was no, she had just graduated from school. My friend’s father’s girlfriend is 17 years old

I didn’t think about it much and ended up telling her that her father was half a pedophile, and all my friends and the teacher began to tell me that if the girl wanted it then is normal and that the age of consent was 14 years onwards, I said that because it was legal it didn’t make it good. In the end we all stopped and talked about it and my friend kept telling her story

Now I feel a little bad for having said that about her father and I would like to apologize, but on the other hand I remain firm in my thought that that type of relationship is quite strange

Should I apologize or leave the topic behind? My friend isn’t really mad at me but I still ask