Your friend is 50% right and 40% wrong and i would give 10% for the not so sure. 50% right because, in the present scenario, u will definitely come across many people due to their social and work commitments engage in a relationship with a man/woman who does not need to be their loved ones. Such people just for the reason that they have to achieve something in their jobs, have to adjust to the situation and have sex. 40$ people are like you who only want to have sex with their life partners. 10% for the people who do not have clear mind and understanding about sex.