My boyfriend was abused as a kid.

My boyfriend was sexually abused as a child by his half brother. I'd guess their age difference is about 10 years, and this took place when he was about 8. It hurts to know this and i want to know more but i also dont want to pry. I love him so much and it's terrible to know this happened. He told me he had a nighmare about it last night which never happens and i just wish I could help. But i cant pry. I can only be here when he needs me.