Praying for you and gifts of strength, power and wisdom to head your way, for dealing with family and Ah, when he is over the initial shock.
Now he knows you have not been fooled by his little game of hidey, and that you mean business, especially where your child is concerned. Telling you it is your imagination, and it isn't happening has been blown out of the water, so now he needs to try something else. I do hope he doesn't turn unpleasant, but if he does, then call on family, friends or if you need them, the police for support......and stay firm in your defence of your child's future.