My fiance seems to have an endless supply of a certain vibrator/ toy. Is it cheating?

After lying to me about disposing of two separate masturbatory devices my fiance left a THIRD to be found by me in his bed by accident. We both belong to a religion that condemns such practices and I personally believe it is wrong to experience any such pleasure with anyone but your spouse- (we are both virgins and are saving ourselves for marriage). He blames it on me because we aren't getting married as soon as planned(2 mo.) and I should satiate his ual desires. I believe it's cheating and I can't be convinced otherwise because I have a strong conviction that in ANY form should be with your significant other- preferably after marriage. He is pressuring me- wrecking my emotions and our relationship by violating my trust. He KNOWS how I feel about it. He KNOWS I hate it and am deeply hurt by it. He takes after his father in this aspect and denies it. He won't admit it's cheating. He told me to "look it up" like Webster's really covers this base. What can I do and say? It hurts!