Ten-chan had already left the house. I called Mark and told him I was too exhausted to study anything today. He's just laughing. Why's he laughing?

               It’s just Mark being Mark, or he actually knows something?

               He stays with us. Sleeping on a couch right in front of my bedroom door and know nothing about us? It's kinda weird, I know, Mark should be the first person to know what's going on.

               Now I 'm lying on my bed thinking about what Nakamoto-san said again. It’s something about no-reply emails. I can't explain too much for now but Ten-chan was definitely sneak-emailing or chatting with someone while he thought I was sleeping. I don't think he is cheating on me or anything, but I feel like I have to try harder to make him trust me.

TY