I'm new here......so a big thank you to anyone who helps with advice as it would be lovely to have others outside views. My partner of 7 years went to sweden a couple of months ago for 4 days in a business trip with others. I hardly heard from him which is not like him,normally hes always checking I'm ok. He came home and something didn't seem right and he was constantly on his phone. I bared it for days and finally I hate to admit it logged in to his facebook to see it was another woman he met there,admittedly from what I saw there was nothing sexual in it,but I explained that I wasnt fully happy about the situation and asked him to respect that,he apologised and said he was wrong and no problem. Few days later I found out he was messaging her on watsapp again,he goes to running clubs and so does she also. Now again admittedly I did have a look at his phone to find a message she had sent him which he had screen shotted and deleted all other messages of her admitting she has a soft spot for him and would have shown him more affection in public! I hit the deck he denied it all at first and couldn't understand what my problem was. Anyway,time has gone on and he still is having regular contact with her,hes lied about meeting up with her and lied about messaging her.....still deleting stuff! And I finally spoke to her husband who shes been married too for just a year who has told me there relationship ended 4 weeks ago because of the same problem. I kicked my partner out,she picked him straight up and booked him in to a hotel,I know she didn't stay as her husband told me she went back to theirs that night. He had running the next day,she took him there,waited and bought him back and went up in to the hotel room with him claiming they were only having a cup of tea! Her husband was outside and caught up with her,for her to basically run back to hers,she said they also only had a cup of tea. Stupidly I took him back because we have a 4 year old little boy together. Since then I discovered a message from her yesterday stating how she wants a loving relationship,having good sex etc and sadly for her that's not going to happen between them and how shes backing off and it doesn't change how she feels about him! I went bat s##t crazy!!!! I messaged it to her husband who said he doesn't blame me for wanting to kill her,to recieve abuse from her so I gave her a barrage back! This woman will not lay off,shes at every running event he goes too,he allows her to carry on with her behaviour and actually sticks up for her........theres so much more,I'm at my wits end and really would appreciate advice if I have been wrong in my behaviour and if shes an absolute cow! I've told him she knows that continuing to message him will pee me off and he allows it!