@ehBeth,
I doubt he's the first guy to want to take a girl on either of the two following locations at work : The conference table, or the bosses desk. What do they have in common?
And the risk adds to the excitement...as does (the next day) the knowledge of what you did - without anyone else knowing (you should be able to follow that line of thought through to other things)
...as does the forbiddeness of both the affair and the location (think about the mile high club, and why it's so famous a concept/club).
You're upset that he risked providing for you?