My step-son, 19yo-not Easy Child, not quite? Difficult Child, has started drinking and partying. This is his first year of college (community college locally). He lives with his mom and comes to our house a couple of times per week, usually when he has a reason, such as when he and his dad have an early morning fishing trip planned or to watch a 'game' or such. During high school he didn't go out with friends much, never had a girlfriend (or even wanted one). He lived out-of-district when his mom bought a house on the other side of town from his school, and she wouldn't EVER let him drive her car. So he was dropped off and picked up by mom all through high school. He had had a fender-bender right after he had gotten his license, so he was scared to drive for a long while anyway. After high school last May he got a job and we loaned him a car to drive. He enrolled in college and started to get a social life, mostly with buddies he knew from high school. We were glad at first, and allowed him to park his vehicle here so his friends could pick him up at our house. He would come home late and sleep at our house. We were naively sure that HE was the 'designated driver' so were quite confused that he never took his vehicle (early on he did, but that stopped quickly). Then we got up one morning last fall and found a bag of throw-up on the porch. After trying to say that it was someone else and he was just disposing of it ??? on our porch??? (I laughed right in his face and called him out on the dumbest lie of the century!) he admitted it was his. Told him no more coming too our house after drinking. He stopped going partying for a while (as far as we knew) and things settled down. We thought maybe he had tried it and learned his lesson. Fast forward to this weekend. He went out with friends. We knew. We got up Saturday morning to find a lamp knocked over, off the table, and laying on the floor. Water marks on the table (never did find the source) the fruit bowl in the living room, a blanket with throw-up all over it, wet clothes and a wet (soaked) couch. He got in the river, apparently, at some point during the party and later came home and fell asleep soaking wet on the couch and remembers nothing. His dad told him we will no longer be the launching pad for his nights on the town and can't come over to sleep after. IF he comes over to sleep, he is in by 8pm. It is worrisome because his brother is an alcololic/drug addict. He doesn't see the connection. Should we be worried?