Let me clear up something I've discussed with friends. There is sex and there is making love. For a guy, there are times I want a wild romp just for the fun of it. Then there are other times when I want the emotional closeness that comes from the true intimacy of ML.
The two can be the same, but not necessarily.
I felt the closet to my W with the penetration. Definitely after the orgasm being inside her was the closest I could be to her.
Also for me, the oral sex was always just sex, not intimacy.