Long time lurker... be gentle.
The company I work for is an extremely small cliquey place and the director is prone to pick favourites. His wife works in the HR department and his two daughters on reception.
Last weekend DH and I went to a gig a good 50 miles away from our home which required an over night stay.
As we turn up at the hotel we have booked I spotted directors car in the car park and commented how I hoped boss and wife wasn't at the same gig 
We grabbed our bags and went to check in and sat in the bar was the boss with our 18 year old male office junior.
We all spotted each other and we all panicked a bit. I just turned and walked up the corridor which maybe looked like I was storming off in anger. I wasn't though I was just shocked to see them together.
DH later told me boss had approached him and told him that they were at a work type conference in the area.
The office junior Is very very openly gay and by the sounds of his stories hes a bit promiscuous.
Anyway Monday morning at work he pulls me into the office and asks if I had a good weekend. And suddenly launched into a speech about the conference and how it was a waste of time. Best not mention it too wife as she will think I'm wasting money etc.
From then he's been overtly nice. The other office girls are a bit because I've never been a favourite, I just blend in.
The junior has been dying to get my attention and keeps asking to go and get lunch with him. I'm sure he wants to give me gory details (vom) and swear me to secrecy. I'm quite happy to believe they were at a conference. head in sand
Aibu in telling him I won't tell his wife what I saw if we can just go back to normal and him and the junior leaves me alone?