I believe the common message from the women here is to do the little touches. You don't have to have a reason, and it doesn't have to be a grand display. When you watch TV together, that is a perfect opportunity to do all those touches I explained a few posts ago. Most women want this in the R, and you said yourself there was never much affection in the M. If your W feels that the only way she gets affection from you is by having sex, that may tell you something right there Mr. T.
When you are there watching a movie, play, cut-up, tease, have fun with her. Of course, there is a time and place for everything. But I sure don't see anything wrong in you adding a little fun to the environment. It may help take away some of that "weirdness".
You can have fun times and still have your serious times. I know you want her to put forth effort this time around. And she may feel that she's doing it. She may be doing all that she knows how, IDK. It seems she responses well when you use that playful, sexy, tease. When a woman is "responding" and not "reacting", you should continue on.
The difference in female response from reaction is huge. Reaction is all the negative stuff, like anger, coldness, bitterness, rejection, spite, depressed, etc. Her responding to her man is quite the opposite. It is all those wonderful, positive things you love to see in her. She is warm, lovable, fun, happy, accepting, encouraging, and so on. So whatever you do that causes her to "respond".....means you're on the right track.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!