"I'm glad you believe that," she says. "I believe that, too."

She's relieved that he's not homophobic. Of course, it means that she's back to square one when it comes to the reason behind all the strange things going on. His reaction to Keeley talking about dating a woman, his reaction to that TV show, his conflict with Sherlock that upset him so much that he had to leave the apartment and that Sherlock refused to tell Joan about, saying it was up to Ted to...

Joan's eyes widen.

Come out.

"Oh."