I’m an older millenial (31). My youngest sister is 24. It’s kind of amazing what kind of a gap there is in our upbringings (though neither of us were raised with any religion.) I think the solution is to go out and meet real life people. Find your parish or diocesan young adult group and hang out with them. Are you in school or were you in school? Find your Catholic student group. Maybe not everyone is orthodox there, but you’ve got a much better shot than in the general population. If those things don’t exist, start them yourself. Use Meetup or Facebook groups - not as a substitute for real life interactions, but to facilitate those real life interactions. That’s really the best part of the technology.
Also, you don’t need to constantly talk chastity with people. Maybe some people just keep that to themselves because it’s personal private business (I wish I had been better about this when I was younger.) If people start talking about their hookups, regardless of their views, just let them know you’d rather focus on whatever activity you’re engaged in instead or just say, “I’m not comfortable discussing that. Hey, what’d you think of the Avengers movie?” or just change the topic. I will say, it’s really nice to be with like minded people, but you have to develop enough real intimacy to be able to find that out. Oversharing won’t do it, and may turn off people who could have been good friends.