Cheating on a trip to Thailand?

My boyfriend is on a 5 week trip to Thailand. He is staying in hostels and every time he texts me he is drunk and at a hostel party. He travelled alone because i have no interest in going there and he couldn't find a friend to go with him. I just have this gut wrenching feeling that something is going to happen with that much temptation around. My friends boyfriend told me that he knows so many guys that go on trips like that alone so they can cheat and no one will ever find out. Im SO paranoid. Has anyone gone to Thailand and stayed in a hostel? What was it like? Was there lots of hook ups?
Cheating on a trip to Thailand?
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