lifegoes It sounds as though you've been swept away in a tide and then forgot most of the dating rules.
However, you don't even know how it's going to pan out - the guy is still on holiday! Maybe he needs some time to process what has happened and to enjoy his holiday and he'll come back and arrange to meet you. One of the biggest things with OLD is communication, and you need to tell him how you feel and ask if something has changed since the conversations you were having, otherwise he's sat on holiday thinking nothing is wrong.
The chances are he has been talking to multiple people and has had the sex chat with you now and has moved onto the next one. Obviously it's a horrible feeling but it's how it works with OLD, he doesn't owe you anything as you haven't met, and probably expected you to be talking to more people. Either way, whether it's good or bad you need to either walk away, or have the conversation with him.
I don't think this one is destined to end well for what it's worth - but there will be someone out there for you, just look at the success stories on the thread. If you're feeling low then take a few days away from OLD and gather your thoughts and come back better prepared.