Adding fb on socials...

So I met this guy at that bar a month ago, we added each other on snap because we didn’t think things were gonna go as far as they did that night 🌚 anyways, we casually have sex now. He’s mentioned before how he would actually want to be with me one day but for now, it’s casual as we are both recently single. Neither of us has brought it up since. Would adding him on social media be weird? 2 of his friends have already added me, which is weird because one of them was with him at the bar that night & just added me two days ago & the other, I haven’t met but I know it’s his friend because he’s in his snaps...