Some people think giving in to sex will make their sex partner marry them. Having sex; primarily to a man is not so that he can marry you but to satisfy his sexual feeling. Some men tend to run away after getting sex or hear of marriage or pregnancy from ladies.
Though a lady might think that with sex she will get love or marriage but a lot of them have been jilted or regretting now. The way men think or are made is different from the way women think or are made. Sex to some is to satisfy their desire, while away time, get money, find love, and show their conquest etc. But in reality- YOU CAN’T USE SEX TO FIND LOVE OR MARRIAGE.