Background
I work on a small team of junior developers. We have meetings 2-3 times a week. This was my first real job after school and I struggled to find work, because I didn't have years of experience or a degree.
Problem
A member of my team found out I have a crush on another co-worker, and is using this fact to annoy and embarrass me every chance he gets. What makes it worse, he is naturally loud. When he first found out, I brushed it off as high-school nonsense and didn't think much of it. I certainly didn't expect for him to keep going the way he did.
One time during a meeting, we were waiting for everyone to arrive. The co-worker was late, and my team member smiled, looked at me and loudly said, I could go get her. I didn't really have to get her, we all use Outlook at work, and it keeps track of our meetings, she was well aware we had a meeting. I was embarrassed and angry, but this is work after all, so I had to keep my temper down.
I don't take the crush seriously, it doesn't affect my work, and I don't intend on doing anything. It's a simple crush, nothing complicated and certainly nothing to blow out of proportion.
Other than meetings, I don't socialize with him after work, and I don't hang around where he is. I don't want to escalate this to the manager because I believe this is a trivial issue (again, high school nonsense), and I don't want anyone else to think I'm hard to work with, and will run to the manager every time a situation doesn't go the way I want.
I'm very introverted, and hate confrontation. I fear I might have to confront him, and politely ask him to stop. I'm unsure how to do so. What is the most professional and effective way to bring this harassment to an end?