you know the feeling?

it is ssomething not right,. still yu can't control aklways. still if she knows, she will be hurt and feel betrayed, do justification,

If your boy friend and your girl friend love each other then why you are disturbing them. What you are thinking as your love may be a just attraction. So ask yourself what is that exactly. If it attraction then why you are bothering about it. Simly chill dear.

Hiding from her the truth would only make matter worst. Tell your friend about you and his boyfriend. It will be defficult in the very beggening but eventually she can learn to accept the situation in the long run. However in doing so, expect to lose your friend. She might never be able to forgive you.