I seem to like being with my best friend. I am a woman and he is a man. Go to Thailand together next month. If nothing happens, I should stay in a room.

Calm yourself for a while. Maybe you're just impulsive, and you don't really like this guy. In the meantime, how should you behave as usual? Don't be too abnormal and don't feel embarrassed. After all, the initiative is yours because the man doesn't know. You like him. Maybe he happens to like you, too.