Ltr came to my parents house the other day for the first time in a couple years. Usually I go to hers bc I work by her place. I have a gray comforter and we have stained it. For whatever reason stains are still there and she saw one the other night and is now accusing me of cheating bc she does not recollect it but since I have bought this comforter I have not had sex with any other girl she is the only one to even come to my house. I don't know what to do to make her believe me.

UPDATE: I appreciate y'alls' advice. I wanted to tell her again so bad that I didn't do shit but I kept my mouth shut and it blew over smoothly.