I do believe I see differences in relationship posts across generations. I'm a youngish millennial, and I do think it's common to see couple posts amongst my friends, since for the most part people post about the the things and people that matter most to them. With social media stories in particular, it's common to post really quick blurbs about random things about activities and naturally people spend a good amount of time with their significant others, so they are usually tagged or included as well. Every one is different though and some prefer to use one platform over another--I haven't posted anything on my fb in 5 years, but I'm active on ig everyday. I think the culture of social media is strange in that, at least in my circle, its super common to see relationship posts. I also feel like it's a common consensus amongst my friends that not posting at least something about partners is akin to hiding them from our friends, family, and others, which may be taken by them to mean we aren't serious about them or where we are headed together. If I love someone I definitely wouldn't hide them from the world ❤. But there are so many other factors to this, mainly being how active someone is on social media in the first place.