How Do I Know?

I have a question that's been bugging me for awhile, and it's only come to light these last couple of weeks. How do you know when you really, truly love someone? I mean, do your insides get all gooey? Do you constantly keep thinking about that person, always wanting to talk to him/her, tell him/her every little thing that happened to you? Do you look foward to talking to them, even if it's just one minute? And then what about when you can't talk to them for whatever reason? Is there a huge empty place inside of you because of it? Well, if that's what love is, then I think I'm head over heels. And that thought scares the s*** out of me. To make it complicated, he and I met online. We've talked on the phone sometimes, and I've gotta say, I love his voice. He makes me laugh.

A couple of weeks ago, I found out that his lung spontaneously collapsed and he was rushed to the hospital and into emergency surgery. That's when all my feelings decided to 'show' themselves. Thank G-d, he's fine and doing well. His doctor is very pleased with his progress. He even went back to work last week. But when he told me what happened, I wanted to hop on a plane to NY and give him a huge hug and then not let him go. Oy. What am I going to do?