I'm going to chime in and reinforce what everyone else said. Your dad, brother, and boyfriend are noble, wonderful people. You are lucky to have them. The world is lucky to have them. And you should feel free to sing their praises whenever the mood strikes you as they deserve it.
YOU, however, are guilty of nothing. If you feel bad for them, feel bad because there are so many ->-bleeped-<-s out there, but don't feel bad because you think you had any role in their troubles. The three of them have chosen to stand up against the ->-bleeped-<-s (am I allowed to use that word on here? - I feel like I am in "The Good Place"). If anything, you have given them a moment to shine and show the best in humanity. And you must be a very special person to them that you inspire them to do that.
In my mind, my spouse and I are in a situation that is no one's fault. It comes with a lot of bumps and dilemmas and opportunities that may be scary or wonderful. The situation has provided us a chance to dig deeper and see things within ourselves that many people never bother to look at. Whatever happens, I see no fault - no guilt - that either of us should feel.
I wish there were more people like your loved ones out there, and if it means anything to you, they are an inspiration to me