堰かれて募る恋の情
Love laughs at locksmiths.
... 堰かれて募る恋の情
愛し合う男女が、第三者からの妨害に遭った時、恋する気持ちはかえって強まり、会いたい思いが募るものである。
"Love laughs at locksmiths."
A man and woman in love shall only yearn and miss each other all the more fiercely when someone comes between them.
Coined by Shakespeare, in Venus and Adonis. The phrase is ever-cryptic if taken out of context. (I had no idea what it meant until I discovered the source text.)
See the origins:
When he did frown, O, had she then gave over,
Such nectar from his lips she had not suck'd.
Foul words and frowns must not repel a lover;
What though the rose have prickles, yet 'tis pluck'd:
Were beauty under twenty locks kept fast,
Yet love breaks through and picks them all at last.