Sex itself is not intimacy. You always have to look at the context of the act.
I agree 100%. I have said this before, sex is not the goal. It is the WHY of sex that matters. It's almost exclusively about the frame of MIND while doing the act.
Lets use the head example here. She could give me head because I ASK her to, or she could surprise me and do it because she WANTS to do me. The latter will make HUGE deposits in the love bank, whle the first will not. Sex is an incredible MIND game. It is not really about the orgasam, it is about WHY you do it. This is why I always come back to desire. You have to make the other person feel like you WANT to give them ??? rather then I do ??? to keep you happy. And it is easy to distinguish between the two. Body language will give you away.