Quick background : Man in question is RP aware, and we've have been friends for a long period of time (Dan)

We went out as a group, Myself, Dan, John, and a FWB (Vetting for LTR, first time meeting my friends). Went to a party and afterwards we all were sharing a Hotel room. 2 Beds. I decided to call it a night while the rest stayed up chatting. I was half awake catching the odd parts of the conversation when something really stood out. Dan suggested that FWB sleep with him and John sleep with me. She said no (Green flag, she's been loyal thus far) but I can't help but question the integrity of my friendship with Dan

Is this an issue I can call him out on and resolve, or is the trust / friendship over