Helping my boyfriend through divorce

Anna • Living life to its fullest! Recently quit nursing school to follow my dream of becoming an architectural engineer. ❤️
So recently, my boyfriends parents are going through a nasty divorce. I offer my help and I'm constantly there for my boyfriend and his dad. My boyfriend has taken the divorce really hard and he just hasn't been himself.  I'm afraid it's going to effect our relationship. Do you guys have any advice on what I should say to him and what I should do? Im really lost here and I want to help the man I love.