I text him and he delays to answer even if he’s online.

This has been happening since noon and I just feel he got bored of me. He does send me first however so can’t understand if he is bored or just busy playing his video game. Before noon (&the days before generally) he seemed more interested in talking with me. Now we reply to each other every 30min-1hr. I really want to start one interesting conversation like those we had yesterday but I don’t want to force him to talk to me.

Ps. He asked to sext and I wasn’t in a mood. I don’t know if it plays a role.