I am not so sure about that. Women dont reach peak hornyness until 40s and in my personal experience that is true. The 30+ and 40+ women I have been with, who have already been married seem to expect the least amount out of me. Just sex, thats it. They even usually pick up the tab for the hotel room if it is needed.
I do agree that the best sex is with someone who you have already had sex a couple times with. Not because of love or feelings but because you are more comfortable around eachother. You know what eachother like and want.

