@Jocarls,
Jocarls, I think that if her friends have told you personally that she already has someone special, then they are trying to softly let you down, maybe even via her.. The fact that they stated this, direct to you, suggests that.
Is her "love" over-seas? Distance between them both? Unfortunately, some what innocent, somewhat not, a 'person' can reach out to someone else to fulfil an emotion/feeling that they are missing in their life.
You can also be close to the opposite sex, as a good friend..
If you are "really close" you should be able to bring up this other love or ask her, who she was talking to on Skype with her "love"...
And, I think that you have to, you won't loose face, you will merely either feel hurt or happy, pending on the outcome.
And, unfortunately, that is life.