Seriously, What Is Going on With Teddy on 'Grey's Anatomy' Right Now?

cosmopolitan.com:

[There are spoilers ahead for last night's Grey's Anatomy. If you haven't watched yet, proceed with caution!] Teddy has been dealing with the fact that Amelia's baby might actually be Owen's.

Obviously, that's brutal, but she's been coping by cheating on Owen with Tom, who is madly in love with her. As if that wasn't bad enough, she also told Owen Amelia's baby might be his, and then kind of gave him this, "Well, what does that mean for us?" question without letting him process the news.

Like she's not out here cheating on him! Plus, she told Maggie she slept with Tom, and her tone while doing so was so... casual?