OMG, let me answer. :D
Okay, so I do not like when people just rush into relationships, I don't know any girl who does. It is necessary to take things slow or you could end up with someone you don't like at all.
My boyfriend and I have been in a relationship for a little over 14 months and we were "best friends" for about 9 months. He liked me and said he fell in love with me, but at first, I saw him as my friend and when I began to like him, I wasn't sure about my emotions. But I am glad he and I took it slow (though he isn't, lol). It's important, though. You have to know who you will be in a relationship with, you need to form a strong bond (trust me, we had some HARD times), and form trust. It's worth it. :)
Btw, I'll be 18 Wednesday and he turned 19 in July.