El verbo phrasal del día es string along.
String along is a phrasal verb that means, according to MacMillan Dictionary: to make someone continue believing something that is false for a long time, especially something about your intentions or beliefs
In most places in the world, stringing someone along is considered cruel & deceptive.
Have you ever strung someone along, making them believe you were going to do something and yet you had no intention of doing it?
How do you think it made that person feel? How did you feel about it?
Do you think that person can ever trust you again?