"i just wanted to warn you that your guy is outside. he's been staring at your window for the last fifteen minutes."

your guy

So Shelley knows that this is your guy not a guy or the guy. So are there other guys? Did Shelley ever have her guy?

I'm worried by her phrasing that the guy is haunting you and not the appt so it's not going to be as simple as moving.

Please stay safe