There is reason behind said word. Various forms along with interpretations of it exist. Nonetheless, if 당신 have felt affection towards anyone / anything then 당신 have also felt 사랑 at the end of the day. Family, Friends, Lovers, Pets, Personal Belongings, etc. Even 가장 좋아하는 Subjects 또는 certain Concepts qualify as I see it. Hence my clear belief !!!!
I asked myself this 질문 once. Yes, 사랑 is very real. Where 당신 encounter it may be different than where I do, but it is always the same. 사랑 comes from family and the 프렌즈 당신 make. And that 사랑 is 더 많이 powerful than with a significant other