>inb4 just be good in bed
Doesn't matter, you can fuck and hang like a pornstar.
Sex with the same person month after month, year after year, becomes inherently boring no matter what crazy shit you try.
The difference is women have no sense of honor and loyalty that men have because their brain operates purely on consequence-based actions.
There is nothing you can do to stop her from cheating if she actually craves sex.
There's millions of women out there with low or non-existent sex drive, the catch of course is you have to be strong willed enough yourself.