Stand up. Poor and tired, but more than this.

[timbits]

Agreed. If it's not about your son, don't contact him. If he wanted furniture, I'm sure he would have asked you before now. It sounds like he's in a bit of a manic phase and doesn't really see how messed up things are. You say he sounds depressed, but it sounds manic, the wanting to go and work on his art, his businesses, wanting sex but no emotional connection, etc. I'm not a therapist, but it sounds a little weird and if you think he has undiagnosed bipolar disorder, it sounds a little similar.

I know how hard it is to back off and not fall into old patterns, but you really have to do this right now. Yes, he called and invited you over, but I'm pretty sure that he's telling you he wants his space. If you have to email him about your s, give a timeline for a response (ie, "I need to enroll S in school by next Tuesday. I'm leaning toward XYZ school. If I don't hear back by Monday night, I'll just go ahead and enroll him". And then follow through with it. If he has an opinion on the matter, he'll let you know.