So kids go their dad's at the weekends. Since Christmas ds7 seems to have gone from lovely, sweet, good as gold child to super argumentative and full of attitude constantly, it's very draining. This evening after another dinner time resulting in him stropping off upstairs I was musing out loud to ds13 'what is going on with ds7? Nothing has changed so where has this come from?' He tells me he thinks he knows what it is and that basically ex has been letting him watch youtube (now I do let him watch 2, very kid friendly age appropriate channels and thought me and ex were on the same) but apparently he's been watching online gamers basically shit talking each other all weekend.
Now thats bad enough on its own but ds13 is telling me this in tears saying that ex told him that if he told me he would stop him from watching his 15s that he's allowed to watch (all marvel, he's very sensitive and mature and knows being allowed to watch those is because of his good behaviour). He was crying because his dad's going to be mad with him for telling me.
Obviously I told him he's done the right thing for telling me and not to worry and I will handle it with his dad carefully.
How on earth do I handle this, I don't want my son to regret telling me but I'm not happy at all.
Tia