even the language of 'witholding' sex is problematic, because it implies that sex is something that women grant to men, but dont really want to. That its transactional, and not something that two people engage in enthusuiastically.
And I agree with the previous poster who said that the western media promotes that idea - indeed Id go further and say that ALL patriarchal societies do that - imply that men are these highly sexually charged creatures, and women are the gateholders of sex. Which is only, ideally, supposed to happen in a monogamous relationship. And many still would have it as a male entitlement, a contract of marriage, and that its solely for the male pleasure.
There are cultural and historical reasons for this narrative, but its not a true narrative at all, and I dont think it is healthy or creates true intimacy and respect between the sexes. Misogyny in all forms feed into this narrative too - and all the red pill incel speak, and porn - its all part of the same false narrative.
Im not going to dferail with that, but its possible that you strongly associate love with sex. That it confirms to you that he loves you, and keeps you confused, because the sex is actually unwanted and often violent. Its possible that the heightened emotions, and your body reacting simply to physical stimulation, release hormones which are designed to bond you - oxytoxin in particular. Back in history, women who were difficult/stressed/ anxious /unhappy were sent to Drs to have special massages and treatments, to make them feel happier and more content. I dont need to go into what that massage involved. But Oxytoxin is a powerful drug. And Im sure those women didnt love their doctors (well, not to begin with!) It can make you feel lovely though. Even when its not wanted. Which is just a big confusion psychologically.
Add in Stockholm Syndrome. Im not 100% sure, but its a thing. And could explain added confusion
Love is care though. Care and trust. And knowing your partner has your wellbeing at heart. These are the things that make love last and build it from the bonding chemicals of sexual attraction in the first months