What do I do??? boy troubles!!.......?

Its called self respect and in order to keep yours you need to move on. If he truly valued you for who you were he would NEVER even mention her name let alone say he would take her some where. Its obvious you deserve better. Dont let him walk all over you because if you do it now you will do it for the rest of your life. I know its rough. Ive been there. One day you will find a man who is equally as crazy about you and wont make you pay for a cent of the vacation, :) Good luck sweet heart <3