No. It's not one word. sarang (사랑) is one word. 사랑 means 'love(noun)'. saranghada (사랑하다) is verb(love + to do). 사랑하다 means 'love(verb)'. A prefix of hada(하다) is 'ha' and suffix of hada is 'da'. saranghanunji(사랑하는지) is changed form of suffix of hada.