Update
It has been nine months since I've been dating New Guy, who I may as well refer to as what he now is: my fiance. We did not attend my brother's Christmas get-together and my ex-bf apparently did not attend either.
Two weeks ago my Uncle's wife passed away. At the funeral my brother & his wife did not even say hello; not in church and not in lunch afterwards which broke our parents' hearts. My fiance was angry but did not let it show; he told me later that "I don't care how he feels about me being around but the way he treats you is despicable and I wanted to shake him!"
I reacted by posting on Facebook that my brother did all of these things (snubbing my fiance at Christmas, inviting my ex to things, etc and then ignoring us at the funeral) and one of our cousins must have sent my brother a screen shot of my post which he then texted to me along with a straight-from-the-internet "warning" from an 'attorney' that he could civilly sue me for slander and defamation. I responded that everything I had posted was TRUE and that is not what slander is. I then turned the tables and sent him our state's Harassment law and told him I didn't want any further contact with him or else I'd press charges. (I truly would not press charges, but since my own brother indirectly threatened to civilly sue me over his own bullshit: I got mad). I hadn't heard from him since.
Two days ago, our Uncle passed away quite unexpectedly. The same Uncle whose wife just passed away. I guess we'll see how he reacts to me at this upcoming funeral...