Love? This wasn't love! This was madness. Insanity. He was crazy. He'd taken something of beauty and twisted it into macabre reality.

爱？这不是爱！这是病态的。他是个疯子。他将美好的事物撕烂，丢进了这残酷的现实中。

youdao

Love: a temporary insanity curable by marriage.

爱情：可以由婚姻治愈的暂时的疯狂。

youdao

Love is a temporary insanity curable by marriage.

爱情是暂时性的癫狂，必须用婚姻来治愈。

youdao

Some ways of falling in love seem like insanity and that I believe is why the ancient Greeks regarded the experience as being 'possessed' by Aphrodite.

BBC: Crazy little thing called love?

Leaving OCD out of this, yes there are aspects of falling in love, sometimes, that are similar to temporary insanity.

BBC: Crazy little thing called love?

One would be privy to accounts of fear, guilt, rage, melancholy, unrequited love and infidelity that would generate an impression of our collective insanity and endearing fragility.

WSJ: Alain de Botton on Religion for Everyone