River, I'd have a really tough time with that too. Both the collision of my two worlds. And its hard enough to deal with boundaries without having to know someone who can cross them. I'm really sorry. (((((((River)))))))
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .