All religions have condamned sex as a sin. It is worthy for them coz the might stays and falls with opinions like this. For what to marry if not coz economical advantages ? Two can love each other and also it’s possible to love truly more than one, coz humans are never properties of each others. But to mean it doesn’t matter with who have sex is lost, coz then the Heart comes lost.
How to make sex is the main point, the motivation, which gives the answer, is it a sin, or not. Look the Bible, Adam and Eve, she offered an Apple and he came thirsty and has taken her, oh, no, he has taken the Apple ! And so both have taken and where out of the paradise, it is a sin to take, but never a sin to give by heart ! Now think about what is meaning giving and taking, coz there is a normal way where you give but also take a feeling, this is the way of sin, doesn’t matter that you are marriaged or not ! You have only to give and stay mentally away from that what the bgody receives. If you both could stay like this, let the feelings go, if they come, then you would experience a miracle and get the best the nature has for you. And this is never a sin, coz you come not out of paradise, you go to paradise and come back…

hyyy

Well according to bible section before marriage is a sin... But this present generation didn't count it as a sin but for fun