Now that we know Alex is getting a farewell episode of Grey's Anatomy, Thursday's episode delivered another shock announcement about the M.I.A. character. 

If you watch Grey's Anatomy online, you know that Alex told Jo he was living with his mother while she was sick. While that reason was a good one, there have been seeds of doubt in Jo's mind ever since he left. 

It turns out, those doubts were natural instincts for Jo because we now know Alex never arrived at his mother's. 

In a truly heartbreaking scene, Jo heard a knock at the door and thought her husband had returned. Instead, it was Link, and Jo said she thought that Alex had ended their relationship. 

“I think he did,” Jo said as Link said there was no way he would pull a stunt like that.

Jo continued, “I think he woke up one day and felt the need to escape his life and me. I called his mom. He wasn’t there. He’d never been there. He left me. And I can’t, I can’t, I can’t breathe.”

By the end of the conversation, Jo was in tears, and given that we know Alex is not where he's supposed to be, it's difficult not to worry about him. 

Why would he just up and leave his wife, best friend, and everyone else behind unless something was wrong? We know his mother suffered from mental health woes,