Should I just let it go and ignore or speak up?

So...I was 15 when I lost my virginity. I know I was young but I thought I was grown and in love. Turns out I wasn’t 🤷🏽‍♀️ but anyway I’ve always been thought up as the mother figure in my friend group. You know the more mature one, the one who cares more about school, work, and my family more then boys and parties and going out every night you know teenage stuff. But it’s been a year now and I still haven’t heard the end of it. “Oh my god I just can’t believe you lost your virginity so young like I would’ve never thought...” “Seems like we’re the only virgins left” two of my friends will say in front of everyone and then side glance to me. Or they walk past me in the hallway and be like “virgin gang” then laugh while glancing at me. I wouldn’t feel some type of way if they didn’t say it like everyday. I don’t know maybe I’m being too sensitive🤦🏽‍♀️