dirty I am the most jealous woman in the world right now! I hate you! 
This is quite sad really but when I worked in an office a couple of years ago, I got on particularly well with a close colleague. I wouldn't say we were best friends, but we got on very well, loved her to bits.
Anyway one night I was walking through town very late after finishing my part time job,off to get a taxi and bumped into her and her fiance. They came to mine for a drink, nothing wild just bottle of wine between us.
From that day on ,he would NOT leave me alone. Facebooking me constantly, texts, emails you name it. One day, I was online from around 9am until midnight (I worked from home sometimes ) and he was relentless that we were going to have sex, would NOT take no for an answer never known anything like it.
Anyway, I was going to tell her. But the next time I saw her at the office job, she was so happily announcing that she was pregnant, and engaged. They already had one little boy, I was so happy for her and didn't want to tell her that day. The next time I found the opportunity I said I wanted to talk to her and she said 'No way,I wanted to talk to you too I'm so worried!' -turns out she was having pregnancy complications and at risk of losing her baby, asking my advice and saying her husband was being great and so supportive.
I never did tell her. Too scared to cause her stress or break up a family unit or cause a pregnant woman further stress. They're married now, I went to the wedding. Slimeball. Doesn't deserve her. I don't work there any longer and haven't contacted her in a while, don't want to be privy to anything he does.