Ustedes is formal and should be used when talking to someone you’re not so familiar with, like a stranger, or someone that should be addressed with respect, like an elderly person.
in this statement the wrong thing is that there should be only boy not boys
Answer:
basically, the guy is talking to a lady that claims that they were in love and that they were a thing. The guy doesn't remember and he has no idea who she is but she is certain its him, she even tells him what they did. She begs for forgiveness cuz she cheated on him. Then he says that whoever cheated on, it must've messed up her memory because it was not him she cheated on
Answer:
Hello, in this case the answer is: ¿puedo entrar?
All depends the context.
Best regards
