I am from Taiwan and working in Thailand about a year. I had good impression in Thailand from the beginning because people are always smile to you but after I tried to make friends with Thais. I am totally upset.
One of my Thai friend asked money from me because his mom needs an operation for eyes but after he took my money. He ran away and traveled many countries for fun that is quite sad for me. There are some Thais try to take advantages from foreigners and when they want to borrow your money, they will tell you a big accident happen in their life. Be aware of this!