Play on the/(one's) heartstrings spoken language verb phrase
Used to indicate causing someone a feeling of sympathy or empathy.
Her tears played on my heartstrings and from that moment I always wanted to be her protector.
Her tears played on my heartstrings and from that moment I always wanted to be her protector.
Somehow that scene played on my heartstrings and my teardrop fell.
Do you realize that she just pretends to cry to play on your heartstrings, so that she can ask for your help?
It's mostly used in the past tense.
To decide to believe someone‘s saying although they may not tell the truth
He said that he was late because he had an accident and I gave him the benefit of the doubt.