Fiancées father is possibly missing out wedding
Some back story, my fiancée (35 male) is the eldest son of 2 and when we were looking at venues for minimonies his parents saw they offered bigger packages and talked him into doing a big ceremony as they would send us money to help. We agreed and we’ve been planning our wedding, well it’s coming up and his bother (29m) says that even though he hadn’t done anything or gone to the gym that his back is hurting to the point where he can’t walk. Some back story here is that his brother has been a bother about this wedding since the beginning, acting like he didn’t wanna come and just being horrible to my partner about it. We thought he had come around and he was even helping make plans for dinner the night before and everything. So he tells my partner about his back and this morning went to the ED via ambulance. Hospital apparently didn’t have an mri on site or something and is sending him outside to get one done and in the mean time gave him pain relief and sent him on. Now he’s saying he might not show up (he’s my partners best man btw) and now their dad is saying he’s not going to come either (they have to fly in and he doesn’t like flying) if the brother isn’t coming. We have literally planned this wedding at their request because they stressed wanting all the family there. I can’t honestly fathom how hurt my partner is, and I have no idea what to say to him or how to handle this. I told my partner that if they can’t do this for him then we need to be done, which might sound harsh but I could never fathom doing this to my child. What am I supposed to do here?