I am at a loss for words to speak to my husband in regards to my stepson. While at our lake house, my stepson followed me outside when I went to ride our 4-wheeler. It was after dark when I wanted to go for a spin. I couldn't find the start button in the dark and my stepson was picking on me about it, rudely as always. When I asked if he just came outside to make fun of me, he replied "Yeah, pretty much." I told him if that was what he came outside for, then he could just go back in the house. He leaned over my shoulder without a word and started the 4-wheeler and went inside. When I returned from my ride, I asked my husband and my two stepsons if they wanted to go swimming now that it had cooled off? They all said yes. Shortly after going down to the water and all getting in, my stepson got out and went to find my cat. He came back and put the cat in the lake without holding onto him. He just dropped him in the water. My husband still near by in the water, did nothing, said nothing. He didn't even try to get the cat out of the water. He just watched it all unfold. What do I do?