If you already have a person that you love, I don't know how u will go on n have sex with a different person?! I mean sex is something passionate and intimate. I know it happens in the so called real world. But, it is also true that if you end up hooking up with somebody else, it would be very wrong to say that it was just a sex n that you still love somebody else. Love's strong. If u love somebody but, have less passion in terms of sex, i think either two of u guys shud work it out by talking freely about it. At the point when u decide to go to bed with somebody else, n still convince urself tht u love somebody else, tht'd be a lie n nothing else.