I totally agree....I've felt both edges before.
About 5 years ago, I've been through a very shameful episode with
my ex-secretary before. There was one day, out of passion, we ended
up in my car, in the office carpark, during office hours. Usually
the carpark is deserted, but on that fateful day, the
ever-so-conservative HR directress and her whole admin team came
back late from lunch and walked past us. We were too engrossed to
notice them.
After that and both of us got into rather serious trouble. The HR
directress (who is holier than my good friend, the Pope
himself.....mainly because she was unwanted, sexually frustrated
and will remain a virgin till old age) came to my room and made a
big wayang out of it. Of course I denied it fiercely to the end,
not knowing that they had seen us....which was of course another
stupid thing to do.....
I remember something stupid I said out of panic "maybe you saw
other people who looked like us?". (it sounded stupid because we
were in MY car). 
The my stupid secretary happened to be the rebellious type. The day
after we got the warning, she came to office in a tube top.
Yes, that sure fueled the fire real
well....
To cut a long story short......when the next round of
retrenchments, we were the first to get out. Don't play play with
office romance....