Well it was a few years ago now, and I was quite young and naive at the time and I thought that if I just ignored it, which was difficult because he was often saying things to me, sending me flowers etc., then it would go away. I liked this guy, I liked hanging around him. But, being honest with myself, I was getting an ego boost out of it as well. He actually accused me of leading him on because I hung out with him and as I said before it all ended terribly. I have many regrets about the way I handled that situation, I think that I should not have continued being such close friends with him, knowing how he felt. I understand now, that he must have been in quite a lot of pain to say the hurtful things he said to me in the end, and I have to take my responsibilty for my part. If I was in the same situation again, if the guy didn't put the distance between us, then I would, even if it caused me pain in terms of our friendship.
Holo, I personally do not believe that you can continue to live a lie in your relationship with her. And you are being naive if you think you can fake your way through it. It will NEVER be "pure and simple" while you still hold such strong feelings for her. There is a clear difference between loving a friend and being in love with a friend, it is completely obvious that you are in love with her and I'm sorry to say that I think that you have few choices. You must distance yourself from her - communication wise - you will go crazy trying to keep this to yourself. And you said that you are willing to outright lie about your feelings if she asked - this is not sounding good holo.
If she has the love for you as her friend that you indicate she does, then she will understand that you have to stay away, for now maybe, but you have to give yourself the chance to get your peace back, you are obviously in a great deal of turmoil over this, she would not want you feel this way if she cares for you. She may be hurt to know that she is causing you this pain and so will understand.
I'm sorry Holo, but I just can't see how you can have it both ways in this situation - continuing to be friends and continuing to feel these feelings pretending that they aren't there. And you will continue to feel them while you are communicating with her. Meanwhile, a great girl might be out there not getting a chance while you are emotionally tied up with your friend. My heart is really feeling for you Holo and I hope you can sort it out.