Lama Ole’s answer:
Yes, that’s true. Sexuality also means suffering. It’s a very strong thing. Desire is the strongest of the emotions; it’s the cause for our human rebirth.
People take their emotions seriously. That’s why we should be careful and shouldn’t break hearts for no reason. Breaking hearts is not a good sport! At first, one might consider oneself someone special, above the drama of broken hearts. But then one day somebody comes along and breaks one’s own heart. It can happen that one partner in the relationship falls in love with somebody else. One should always try to handle it as responsibly as possible.