This may not apply to all women but I would guess it applies to almost all of them, especially the ones who have had a baby or two...
We don't like you to touch our stomach. Maybe if we are laying flat on our backs and haven't eaten lately and we feel skinny in that moment, well ok...but otherwise, if we are sitting, definitely do NOT touch our stomach. We are acutely aware that if we are bent over forward, as when we are sitting, there is a tummy roll there and we do not want you to touch it. No matter how many times you tell us that it "doesn't bother you" and you act like we are being silly, it DOES bother us and we don't like it.
Now, if your wife happens to have a perfectly flat tummy then she probably loves you to touch it. But likely, she doesn't and likely, she doesn't want you to touch it.
Especially annoying is when we are laying on our side and our man wants to spoon up behind us, but he puts his hand on our tummy. ACK! That will make me hop out of bed faster than fire! Instead he could put his hand all the way around her and grab her free hand with his. Or he could make sure his hand stays on her back, shoulder, thigh, hip or strokes her hair.
I am writing this in response to Burt saying how he was making moves by starting rubbing her stomach and then moving up to her breasts. Of course, this type of move in general isn't likely to work, but specifically, touching the stomach is usually going to make her retreat and feel insecure.
Sorry guys, I know it is like navigating a mine field....but trust me on this one!