Theory of our SO's getting our symptoms...

So I'm sure everyone has heard of the theory that some SO's get the Mommy's pregnancy symptoms such as nausea, morning sickness, mood swings and cravings. Well, hubby text me with a bit of an attitude (I can easily tell when he's upset) and I asked what was wrong. He said he "doesn't feel like himself" and I was wondering does anyone else think maybe he's getting my moodiness ?