This is sort of for the ladies?

This is going to come out stupid but here goes. I went on a cruise this week, and we ate dinner every night at six. We had the same waiter every night. I really liked him, and ever since I got off the boat, I have been a little depressed, and I have a weird sick feeling in my stomach, and I really just want to cry sometimes because I probably will never see him again, and I only have his first name so I have no way of even contacting him to possibly see why I feel like this. What should I do?