She is being as cautious as you are by the sound of it all! Let it go, forget about the facebook thing.. She has not actually done anything wrong and now you know there are 2 hansome guy's with her in mind... Time to outpace them

Get to the Philippines and just enjoy yourself. Don't try to use her and don't make her think you only want sex. If it happens it is because it will happen, not because it was coerced You have to prove yourself to her as well, just because you are a westerner do not think she is in the bag! If she is pretty (and I suspect she is) then there will be a fair amount of interest in her if she made herself available on dating websites..

Get over there and sweep her off her feet if she is the one for you