Sex is an union between man and woman. An interesting thing in this union is : man likes the process of doing sex with woman but not woman. Similarly, woman likes the process of doing sex and not in man. So, both man and woman like the PROCESS of doing sex" and NOT individuals. Both are living in mistaken belief of loving each other.
I think you are confusing platonic love & sexual needs. Men have sexual needs. Women don't. Men's love is conditional on getting the sexual interaction that they need. Women look for platonic love - kissing, caressing & affectionate companionship. This is because women are not aroused with a lover. You need to improve your English if you are going to write in English. It is not easy to understand what you mean. But such a question is hardly scientific or worthy of research. You need to be more precise about what you are proposing and provide examples or evidence to support what you are saying. Sex does not equal intercourse but for most people most of the time it does. Intercourse is a mating act and has nothing to do with women achieving arousal or orgasm. A woman provides an orifice for a man to ejaculate into. If you want to understand women, imagine what it would be like if your sex life involved providing an orifice for a man to ejaculate into. Then you might get close to understanding the female perspective on sex.
What is your question? It is very general and hardly scientific. Do you want to know what sex is or what love is? They are completely different. Sex means sexual activity either alone or with a lover. Sexual activity usually includes some genital stimulation but can also include lovemaking - kissing, caressing and sensual touching (whole body). Love refers to platonic love that has nothing to do with sex. In general men are interested in sex. Men's love for a partner is conditional on getting the sex they want. Women's love is platonic and not conditional on having sex. Sex is of little interest to women especially when it includes solely performing the mating act of impregnation called intercourse. Women want lovemaking and affectionate companionship. They would prefer to skip intercourse which provides no erotic arousal and almost zero physical stimulation.