Troubling definition in American English Throupling is a term that describes a one-of-a-kind relationship where three people join emotionally involved connection. Throupling not only involves affection, but also relational encouragement and commitment. The meaning behind throupling illustrates that it's regarding finding happiness within the context of a flourishing trio. Being involved in a throupling requires truthfulness, dialogue, and agreement from all individuals involved. Overall, throupling celebrates variety in relationships and redefines traditional notions of love and romance.