I've gotten to know one of H's friends, his college roommate - let's call him Harry- over the past few years. He lives about 2 hours away and travels a lot for work so we see him every couple of months. He has a long distance girlfriend - lives in a different country - who I first met about a year ago when they started their relationship. She's 10+ years younger than me (22); though I don't know her well, the time I've spent with her has been positive and she & Harry have seemed like a good fit.
Two days ago they came to visit us. Harry's GF and I started talking and she told me some things about her relationship with Harry. He's verbally abusive and treats her badly - says things to intentionally hurt her. Dr. Jekyll / Mr. Hyde type thing where he has that extra drink and flies off the handle and becomes jealous & controlling. According to H, Harry doesn't have a great track record with one of his exes but for some stupid reason I was surprised to hear this story from GF. I felt horrible for her. I told she can call me any time and that if she needs a place to stay or a ride to airport to please let me know. She's seeing a therapist. As we were talking, H & Harry showed up so I just whispered for her to send me a fb msg. Yesterday she sent a message, very short...essentially - thanks for listening.
I have no idea if she intends to break up with him. I told H about it and he seemed pretty worked up. We're supposed to see them next weekend at a BBQ at Harry's place. The ragey impulsive part of me wants to pull Harry aside and say some strong words. However, Harry's GF told me this in confidence, which I've already broken by telling H (and TK). The other part of me says it's none of my business and all I can do is make myself available to support Harry's GF.
She flies home next Monday so there's a chance this all just ends after the visit, though I suspect no. They're already planning to go to a wedding together in GF's home country in October. Harry's mother and GF's parents meet for the first time.
Should I just keep my mouth shut and offer support for GF?