Guilt.
For Konrad to use that precise word showed he was well-aware of the truth behind Rati and Kama's union. To outsiders, the God and Goddess of Love, as they were referred to throughout Heaven, undoubtedly were a perfect match. As the third son of the Great Primal Ancestor, though several millions of years younger, Kama also was an ancient deity born before the times of the proxy battlefields. In his youth, following in his father's footsteps, he fancied himself the God of Love and created many God-Arts at this effect.
An infamous rake, Kama left an abundance of broken hearts in his wake, and also held the nasty habit of sparking relationships between complete strangers...all at a complete whim.