godale you may not know this but I'm an older guy, been down this same road several times in my life until I finally GOT it.
The love and affection you experience right now is a sugar coating. You are going to wind up miserable, or making her miserable, this is going to be the biggest mistake you ever made.
Think of how you feel for her right now. Do you want to destroy all that and wind up hating her, or her hating you?
Here's what I "GOT" out of chasing the same types of relationships you're chasing now:
This is a control issue. And you're totally giving up who you are and surrendering control to her, to her family.
And here's what's going to happen: If she hasn't already, she is going to lose all respect for you and things are going to get WAY worse. I think she already has, the decrease in intimacy you're talking about is the first sign. "Good enough, got him where he wants it, now I can
use that as another thing to control him with."
And here's the really really bad part: people are doomed to make the same mistakes over and over again, until they finally understand WHY they're making these mistakes. So if you go through with this, chances are very good the next two or three relationships you have afterward are going to be exactly the same thing! People will ask themselves, "why do I wind up in these types of relationships?" The answer to this is NOT the people they get involved with, but something in your OWN motivations draws them. Until you fix that, you'll always be right here.
This is not about your acting like a kid. This is not about too much work to do. Believe me, I put in 8-10 hours in a work day, 3-5 hours of side-work at home at night, and still manage to have time to play with my RC's and spend time with my wife (except for the last month or so, got other things going.

)
The RC thing is just one facet of your character she sees you're interested in. If she has control over that, then she knows she can control everything else. It could be anything, and guess what -
if you go through with this it will be EVERYTHING.
I know you love this woman, but if you do, you will not do this. You're going to wind up hating each other. Been there, done that, over and over, and yeah, feel like a total fool for doing so but eventually I got it.
Best of luck, and learn from your mistakes . . .