Social Media

My boyfriend and I have been together for 6 months now. We are both juniors in college. He's always claiming I'm his dream girl and would do nothing to lose me. I trust him and we haven't had any real issues thus far. But he hasn't posted anything about our relationship on any of his social media. It's not that I want it to be announced to the world, however I also think there's a fine line between keeping our relationship lowkey, and keeping it a secret. What do you guys think?