noun
predisposition for love; romantic disposition
Describes a person who easily falls in love or is always in a romantic relationship. Often used in casual or psychological contexts.
彼女は恋愛体質で、いつも誰かと付き合っている。
She has a romantic disposition and is always dating someone.
恋愛体質の人は、失恋してもすぐに次の恋を見つける。
People with a predisposition for love quickly find a new romance even after a breakup.
惚れっぽい is an adjective meaning 'prone to falling in love,' similar to 恋愛体質 but more colloquial and focused on the tendency to fall in love easily.
Compound of 恋愛 (love, romance) and 体質 (constitution, predisposition). The exact origin is uncertain, but it likely emerged in modern Japanese to describe a personality trait.