facebook chat is killing me inside?

[gspec]

It will always be complicated? Relationships!
A women who i have lived with for almost 15 years & have two children with is chatting with a guy she works with on facebook. We broke up at one stage & got back together after 4 months. In the time we were apart she met this guy & they had an encounter. Through a wierd alignment of stars we got back together & since then she has started chatting to this guy a lot on FB chat. She does it in front of me & one i night i happened to be giving her a coffee & looked down to see that she had asked him out for coffee & his reply Was COOL!
Anyway, i knew her password & went onto her page & checked her message history & there was a certain amount of flirting between the two. i confronted her & since then my world has gone loopy. She wants to be just friends & has said she wont stop chatting on facebook. Im just said about the whole thing because i really love her. i dont want a response i just needed to vent. My chest is sore from love & i feel really sick. I cannot eat. She goes out drinking with a group of people from work every friday & this guy goes out aswell. all i do each friday is stress about the whole thing. its sending me loopy & mad. im crying all the time & just feel fucking miserable. i keep singing the song "mr. Brightside" by the killers but i dont want to fall into a state of depression. i want to leave the country & get away until its all over. . No replies im just venting. nothing more.