fall in love verb3 •To come to have feelings of love, particularly romantic love.I fell in love with him the moment I first saw him.Have you ever fallen in love? •To come to have feelings of love towards each other.They met, fell in love, got married, and lived happily ever after. •To come to have feelings of intense liking directed at another person or a thing.I have just fallen in love with Rome! formsfell in love · fallen in love · falling in love · falls in love