An easy/a soft touch noun phrase
A person who has an easy or a soft touch has a kind and tender way of behaving.
I think that you are going to be a great teacher because you have a soft touch.
She fell in love with him because he has a soft touch.
A person who is an easy or a soft touch can easily be persuaded to do something.
My mom is no soft touch. No one can change what she has decided.
I'm sure that I can persuade my father to give me some money because he is a soft touch.
Extremely sweet, friendly or generous
A proverb refers to the traits of a nice, loving person who looks cold outside.
This phrase is formed based on from the mid 19th slang "touch" used by criminals to allude to the act of stealing something from someone, particularly from a pocket.
If a person has the devil's own luck, he or she has extremely good luck.
A: Yesterday I won a $10 million lottery jackpot and today I won a car in a draw.
B: You have the devil's own luck.