Avoid spend your coffeebudget on their training, simply suggest they start with 'an easier organ'.
"Please don't think I am in love with you, this heart is the default, most cost-time efficient shape my boss tells me to make when it is busy in here."
And if they brought me a plain cappuccino, they signaled: "I love you secretly, but unfortunately I don't know how to make a milk foamy heart shape in your cappuccino."
Those were puzzling times for me as I kept asking myself. "What is it about me that baristas find so attractive?"
Barrista