Love at first sight: y and Ji à n q and ng x and n, love: admiration. I like the curtain when we first met. As predicate, attribute and object; It means love at first sight.
Dump at first sight: y and Ji à n q and ng d m o, dump: admire, heartbreak. I envy or admire you as soon as I see you. As predicate, attribute and object; It means love at first sight.
We hit it off immediately: y Jian rúgé, so: old friends. We hit it off like old friends when we first met. As predicate, attribute and adverbial; Love each other.