Questions: Flirting

Okay, so I told my best friends that I liked a person, and a few days later, they started teasing me about it around my crush! He keeps on giving me and my friend weird looks, and I'm starting to worry. And also, today, one of my friends literally said to him, 'I know something about her that you don't know.' What am I suppose to do?!?! After she said that, he gave me a weird look again. She kept on bringing it up in class, basically teasing and threatening to tell him! Please help me. Should I tell him?

Today after play practice my friends and I were talking about this really cute guy. We were just hanging out with him and another guy, and we were talking by the bathroom. I said I wish we could just ditch the other guy, and hang out with him because he is so cute and nice and perfect. As we went to go back and get our stuff, I noticed he was getting a drink of water right next to us. I don't know if he heard me, or thought that I was saying I wanted to ditch him, not the other guy. Either way I really like him and I think he might like me, or at least used to. After that we walked home and he was ahead of us but didn't say bye like he usually does or talk to me. What do I do?

So last Friday (April 3rd, 2015) my family and I went to Hundred Islands. There are a lot of Islands you will need to tour and can pick where do you want to stay like a beach resorts. Fast forward. So we picked the quezon island. When I'm swimming in the beach, I'm alone, I mean no friends with and full of strangers are swimming, my family are in the cottage. So I decided to rent a life jacket and lay my back to the water and relax. I opened my eyes and there is a very good-looking guy who got my attention, he's all alone, laying also his back in the water. He's wearing a striped t shirt and me also, violet and white striped sando. After a minute, I decided to sit at the shore and look at him, he looked back at me like a 5 seconds. My mom called me to take a picture with my cousin so I left him first. When we're done taking a pic, he went to their cottage and took a sit, I'm still looking at him. After a minute again I caught him looking at me like 3 seconds. So yeah I'm attracted to him. I don't know tho. Fast forward again, he already took a shower and changed his clothes, in a black t-shirt I think. So I decided also to take a shower and changed my clothes to striped t-shirt so I can talk to him. But when I'm combing my hair, he and his family went to the store and walked by in front of me and he looked at me again like his saying "I want to meet you so bad" so they are going home that time. I don't know maybe I'm just assuming but it's true that he looked at me many times. So I wish I could talk to him that time and exchanged phone numbers. Yeah so how do u think? I'm still thinking of him and can't stop. Help.

I'm really shy so I just worked up the courage to send my crush a friend request on Facebook, it's been a week since he accepted the request and I was wondering if I should send him a private message just saying hi or maybe post a like for an inbox, I doubt that he would like it anyway. I see him at school almost everyday but we very, VERY rarely talk, we've had like 3 conversations but it was awkward every time because I get so nervous I tend to act really really boring and uninteresting (even though I'm not). So I thought that it might be a good chance to speak it him on Facebook.