I'm new here but need advice
My DS is 15 and in year 11. His behaviour has been awful the past few weeks with skipping school and lying. Today I got a message saying he wasn't in school and when he got home at normal time he acted like he'd been to school. I then had a call from my MIL and she said that DS told his cousin (just turned 12) to skip school and hang around with him and his mates his cousin said no and DS said well you're just a coward and no one will like you so his cousin agreed. He then told him to steal some alcohol from the shop and he told him that if he didn't he wouldn't be able to hang around with him or his mates again(his cousin looks up to him) so he did and he got caught obviously but luckily the police weren't called as the man who was working in the shop could tell he was young and he was probably forced but he told nephew to call MIL.
I spoke to DS and he said he didn't say that to nephew but then he said he did but he was only joking and he told me not to tell DH. I've took his phone and playstation off of him but really don't know where to go from here
Can I have advice ☹️