We went on a vacation together, I noticed them hugging in a loving fashion before I went to bed. Woke up the next morning to find them gone, then banged on the door of the other room we had (it was more than the three of us so we had two rooms), knowing they were in there. After like a minute or so she opened the door and it was just them too, the white guy was putting his shoes on. They lied to me saying nothing was happening and I called them out on their bullshit. She then tried to salvage the situation by asking me if I wanted to join. I got pissed off, told them I am not gonna deal with this bullshit and took a bus home.
The guy later called me and said he didn't know, I forgave him saying there was no way he could possibly know and wished him good luck. Haven't talked to them since.