The male co-worker being just a friend -- total B.S. But now that you know, do yourself a favor: stop spying on her. Spying is a deal with the devil. You gain some info but your pay for it with your soul -- you will be tortured.
Well, the whole situation is a torture -- we're all going through it. But I hope you find courage to rise above.
Please put a summary of your situation in your signature. Click on "My Stuff" -> "Edit Profile." See other people's signatures for examples. There are so many similar stories here, it helps us remember who you are.
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final