My advice to Catherine would be, if she loves the guy and the guy loves her too, then there is nothing wrong with going ahead to have sex with him. May be am mistaken, but what is the definition of true love? Because according to me, everyone of us gets to meet their true lovers once in life and oftenly, our true lovers are not always our long life partners. We usually get married to other people and let our true lovers go and engage with some other people. It is also true that a person might be your true lover but you might not be their true lover. True love is something that I can't even explain here. It is more than just love and once you find your true love , you know this is the person and in most cases you end up sleeping with them but somehow somewhere you don't spend your entire life with them but they just never seem to go away from your mind. So back to Catherine, we don't only have sex with people we truly love, you can have sex with someone that you just love and trust me no one is going to judge you if you choose not to judge yourself. Thanks @nomad-magus for sharing.