Ok,
So i have 3 sons 15, 16 & 18 - my ex and i recently divorced and without going into mega detail and boring you all - the boys don't want him knowing the ins and outs of their life, he didn't respect their wishes and boundaries before and they don't trust him with their feelings at the moment.
He is often asking me for updates on them, and i am reluctant to go against their wishes and overshare out of respect for them.
I have made it clear to the boys and my ex that he will always be their dad and that will never change and that ultimately the choice is theirs and that they may choose to have a different relationship with him later on.
That this is a process they need to go through to come out of it happier and not messed up and bitter.
He is playing the victim and constantly telling me that i should be encouraging them to spend time with him. Rather than respecting their opinion and taking responsibility himself for the relationships he created with them (can you see why we're divorced 
)
So my actual question is legally do they have the right at their ages, to say i don't want my parent to know my personal details? For example job choices, how they felt about going back to college, whats happening at school etc and is it my responsibility to provide this or should he be asking them and accepting their answer or silence himself.
We both have full parental responsibility, no court orders but they live with me out of choice and only the 18 year is currently seeing him.