Should I text him first?

So me and my boyfriend are in long distance relationship. Recently, I feel like he’s avoiding me? We used to text everyday, and before he goes to bed, he’ll say “goodnight i love you” etc. But a few days ago, he stopped saying “i love you” and when I text him, he says “I’m just about to go to bed.”
Now, he hasnt contacted me for 2 days. I get it if he needs space, but I’m not sure is it because he needs space or not. The last time I texted him, I told him I was going out with a male friend, I asked if he minded, he said he didn’t (however they are not in good terms tbh). I’m not sure if I should update him about what happened?
Should I text him first, or should I wait for him to text me first.

P.S. We contact each other through skype, so I know when he’s online or not… Thanks :)