Ok, so you lied and he caught you out. But it wasn't that big a deal - I can understand why u took the quick explaination, and so should he. You said it was a mate so that you could rush back to continue the 'fun' with him! Maybe if you explain the reason u rushed away in the 1st place was 'cause you were worried about your niece's tests. But I have to say, it didn't take much to destroy his trust, did it! Sounds like he's got more going on in his head than he's letting on. Try asking him why it took a silly thing like this to send him off the deep end. Good luck : )