Help me with my boyfriend situation please!? I need help here.?

I have a boyfriend of over a year now. We have been saying "I love you" for several months. For some reason, these last few weeks have seemed to change for me though. Little things that he does are beginning to bother me that never did before and I am less wanting of any physical contact with him (or anyone at all). My best friend and I have liked each other for years now, but it has never seemed to work out, but since this strange downfall, I feel closer in feeling to my friend than my boyfriend.. There does not seem to be any strong want to love anymore, but I know that it is still there because I can't image letting my boyfriend go because it makes me too sad to think about that. Unfortunately, I don't seem to feel a strong heart beat when I am close to my boyfriend, but when I see my friend smile, I become happy. My friend told me he was in love with me the other day and I guess I couldn't stop smiling because everything he said was so sweet. I don't want this to seem like my decision is made up because it isn't. I still want to stay with my boyfriend.. When I he hugs me and holds me in his arms, I feel happy and close and safe and I can't imagine not having that. I want to stay with him, but I need to know other opinions besides that of the friend that loves me.I just need to know what the best choice of action will be. I know that there is still a love in me for my boyfriend just not as strong and there is a strong liking toward my friend. Unfortunately, they are not too fond of each other so it's not like there would be a change in my status from boyfriend to friend. This has been going on for awhile and really coming down hard on me these past couple weeks. I just need to know what to do about everything. I wished the world ended today so that I didn't have to worry about this situation and all the other difficulties that life unfolds to us. Please heal me.