First, try the classic moves, such as putting your arm or hand in grasping reach, making it easy to hold hands. Then look and see what they do. Where are their hands? Try holding their hand. What do they do? You have to learn to be observant enough to notice when they are not responsive or when they are open to your advances. If they smile, or let you hold their hand, they are likely open to the idea of going from friends to something more than just friends. If they are not responsive, or pull away, look worried, etc. then they are not ready for a relationship change, and you need to hold off.

Second, talk it out. It is embarrassing to tell someone you like them and have them tell you that they do not feel the same way, but let's be honest, it is so much better than wondering, and hinting, and sitting around hoping. Also, there is always the chance that they return the sentiment, so being the one to take the risk and put it out there can have a real payoff. Additionally, it saves a lot of time and drama, and you will appreciate that in the long-run.

Third, continue the friendship regardless. One of the biggest killers of friendship is taking it to the next level. This is usually because when the romantic side kicks up, the friendship sides get left behind. Make sure that you keep talking to each other, keep spending quality time together and having fun. Do not let physical attraction get in the way of keeping your friendship going, it is the basis of a great relationship. If the person is not okay with the "I love you more than a friend" speech, then it is okay to take a break for a while to let yourself compose your emotions and deal with the fact that it is not going to go anywhere, but then try to keep the friendship alive. If you fool yourself into thinking there is more than there is, then let it go, but if you can manage it, it is always nice to have more friends.

Kicking things up a notch is hard, but if you like someone more than a friend, you will get there eventually, and it is going to be difficult to stay just their friend and watch them date, listen to their stories about other people, etc. So, guts up and do it!