Here's some perspective from a HCBW...that list is ridiculous.
I don't even know where to start. I would never ask my husband to highlight ten things from a list like that (Which, I agree with many here, was obviously written by a woman. I'm pretty sure if my husband wrote a list of things I could do, it would probably be less than 5 options). Too many ways for that to backfire. I would just tell her that she's doing fine, or at least cut WAY back on the number of things you highlight. I can just see her panicking and reading into anything that you highlight ("Oh my gosh! I didn't know that was bothering him...oh no!") Especially, I noticed you said that she's pregnant with your 2nd child? I'm pregnant with our 2nd kid as well...and I guarantee you emotions are going to make her more wacky in reaction.
Pinterest is completely full of stuff for Valentine's Day right now, which is probably where she ran into this. Women are always trying to do something kind and romantic with good intentions, but it usually backfires, and she doesn't get what she expects in return. (Seriously, she'll want something in return.)