Nothing like a fight in a foreign country during the holidays. How much do you want to break up with someone that you leave a trip early to fly back home by yourself? The couple headed to Mexico to spend New Year's together, but never even came close to making it to that day. Selena flew home on the 30th and Justin flew home on the 31st. She probably asked to see his phone again. So, then Justin comes back and probably does some pot and a pap sees him and follows him and loses him and is faked out into thinking it is Justin and then dies trying to get a photo.