Re: How can I tell if this is a genuine excuse or not?
Dude she is vomiting. Why disappear for two days lol? There's no way of knowing if she's lying so might as well take it as truth.
If this is the first time then let it go. You can't hold onto all your "cool" points. Hit her up tomorrow asking if she's alright, then tell her thank you for not getting you sick and ruining your date with Megan Fox this week.
"All things are subject to interpretation. Whichever interpretation prevails at a given time is a function of power and not truth."