rumor about oral sex..helpppppppp!!!?

[Smugglaops]

okay i have many friends including girls and guys...i love them so much and care about them..before a week ago my college went on a trip..so all of my friends came and we all dances in the bus which we taken on the trip with music and had a great time with my friends..the next day we were all talking about the trip and how much fun we had and all...but i don't how a friend of mine (shes girl) had got to know that im spreading a rumor that she had oral sex with other guys in the bus and someone has told her that im spreading it to the whole college!..i honestly didn't do such a thing and she is one of my best friends and she helped alot with my girlfriend! but now she won't even look at me...im sooo sad..how can i explain this to her???????? (((( please tell meeeeeeeeee!!