First trip with boyfriend=DISASTER

So me and my guy have been together for about 7 months. He is amazing, everything I've ever wanted in a partner. We decided to dive in to a trip to Thailand for 6 weeks while also including MY parents for a total of 19 days with them before they headed back before us. I am grateful my bf(Mike) wanted to be a part of this crazy trip with my even crazier family, but since arrival it has been the trip from hell. Along with many other arguments, stress and disagreements, which I won't bore you with, the biggest let down happened two days ago when my dad told mike that he has been getting "happy endings" at all of his massages since he has been in Thailand. My bf held this in for about a week because my dad told him not to say anything to me because I would freak (FYI my parents have been together for 41 years, they are in their 60s). My bf had been acting so standoffish, I couldn't get a grip of what was going on and then it came out, he couldn't hold it in and he told me what my dad told him. I obviously could not hold this info in.. I confronted my dad and after he flipped out on me and got super defensive he said he was simply trying to "impress" Mike and that it was not even true that it was just "guy talk." Now my dad is mad at mike because he said he disobeyed his trust and broke a man's word. He yelled at him said he lost all respect for him called him a rat, meanwhile my poor mom is in the middle just hearing all of this. Mike apologized for the way it came out, and said he should have told him immediately that it made him uncomfortable. I am trying to get through this but I am at such a loss of how to make it through this trip. Dad stands by his word that it was a lie, and that's what guys do: tell each other ego stories to build each other up. And on top of it dad said he has not been able to perform or get an erection in years because of all of his medication he is on, so it wouldn't have been physically possible, which is also why he says he made it up to make himself feel better. Wtf is happening? How do I keep my relationship with both mike and my dad? And enjoy the rest of this trip? Is guy code still a thing at 60?! Please help :(