I'm 27 and in my 1L year. A good number of classmates are K-JD give or take a year, and like another commenter mentioned, I think this adds to the social aspect of law school with them potentially turning to hooking up to get through it.
Like you, I'm notoriously out of the loop, for a few reasons. 1.) Most of the K-JD live in the same buildings less than a mile away from campus, creating a dorm-like atmosphere similar to college, where as I live 30 minutes away in a very urban area. 2.) I have a number of friends in the area, and a girlfriend, so much of my social life outside of school revolves around them.
Someone asked me pretty earlier on, when they found out I had a girlfriend, how it was possible to have a relationship in college. I laughed because I didn't know how to answer their question. Then I thought back to some of the girls that I've dated in the past, and thought about how they would handle the separation & schedule, and it made sense. My current gf of about 2 years is incredible and sweet and low maintenance and I could say a million other great things about her but the bottom line is that she understands that this sucks for everyone, but she knows it's for a good reason (hopefully), we are both busy, anyway, and all we can do is make the most out of the situation, see each other when we can, and never bring the shit home.
My being in law school, so far, has yet to cause any issues with us. We don't see each other as much as we like, but that hasn't really been a drain on the relationship. We decided to get an apartment together next fall, so we're looking forward to that.
As far as friends.... like I said, I'm going to school in the same area where I've already been living for 5 years, so I've got a good friend base as it is. Frankly, because of the number of K-JD kids, I'm not hell bent on making great friends there. In fact, my best friends at school, so far, are 30 and each have two kids. We haven't really had a whole lot of touchy feely conversations, but I don't know if that's because we're guys, older, busy, focused, just getting to know each other, or what.
I definitely enjoy my relationships out of the classroom more because they're more established, more solid (can something be more solid?) and I know I can rely on them no matter who wrecks the curve.