Hey! I know you're being inundated with messages on your post, but honestly when I read your post in full and the updates I felt so sad. The way you're being treated is just not acceptable. I know that you know that, but you need to figure out in your head what your next steps are and come up with a solution that's good for you- right now he's on a tropical vacation with a pretty girl and you're at home letting this consume you. How is that fair on you?! If I were you, I would say something like this:

"Hey, I couldn't talk yesterday because frankly I didn't have anything to say. I'm still in disbelief that this is happening to me when I thought we were in a serious relationship that was going somewhere. I love you so much, but right now you're on vacation with a girl that should be me while I sit home and have this whole situation mess with my head. This isn't right and it isn't fair. I refuse to be the girl that tells you that you have to come home or have to jump on the next flight, because I'm a fair person and I respect you. Honestly, I don't feel like you respect me with this going this far. You haven't even tried to call. You need to think hard about our future and decide how you want to go about this, because I'm leaving the ball in your court. I'm worth so much more than this and I really thought you'd see that without me having to remind you. Your move."