Well, I will just comment on the part where you feel like " a cheating skankho" when you "start to fall in love with another person as well".
Everyone has their way, and point of view. I will only share you a slice of mine. When in a romantic one-to-one relationship, you love intensively. It is a special, unique bond you establish with this one person. If you drive yourself away from this bond, you enjoy it, and do it constantly; then it would be considered as cheating. Is this what you mean? Anything you'd like to add or subtract?
If this is your case, then I'm glad you're being honest with yourself by accepting it. I can suggest that maybe you're searching or expecting something that sadly is not in the person you are sharing a bond with. This "something" you're searching could be company or emotional stability. I am not saying this is not part of what is experienced and/or expected in a relationship. I just think that it usually isn't the main focus. Maybe what you are needing unconsciously right now is not being provided by him or her.
What do you think?