Op here, sorry for the lack of update.
1. He's not married. I'm a daily part of his life, various hours of the day, spend time with his friends and family, spend time in his home, have cared for his animals when he's been gone. I have no doubt about that.
2. We have plenty of space in our relationship.
3. He texted about an hour after I posted this.
4. It was an issue of miscommunication. He thought he told me he had softball practice, but he had actually only told me when he had a game (the next night). He took a nap after work, woke up and went to practice, went out with the team, and text me when he got home. We caught up on our days like normal and that was that.
Sorry for the misuse of incognito, I blame being tired and worried
