381 Have a soft spot

One Idiom One Day: Have a soft spot

They both have a soft spot for puppies. 

a sentimental weakness : a particular fondness or affection for someone or something, often for reasons that hard to understand or articulate; 

a vulnerable point

This expression, first recorded in 1753 as “a soft place in one's heart,” uses soft in the sense of “tender.” Apart from conveying emotions of affection, “soft spot” is also used to denote a weak or vulnerable point since mid-1900s, as in That's the soft spot in his argument.

E.g., She was a very bright student and most teachers in her school had a soft spot for her.

There is a soft spot in the defense system. 

Le