I will be as brief as possible. Rewind to April 2012, my sister and I lost our lovely dad. Both of us were devastated, especially as we lost our mum 6 years earlier. In the August, my sister found out that her husband of 13 years had been unfaithful to her around the time of dad's death. She admitted that she had played a bit of a part in this as she was having some doubts about their relationship and, though she had not been unfaithful, she had thought about it and had been playing a few 'mind games' with him I.e. going out after work with friends on a Friday and being vague about where she was going/when she would be back, and ignoring his phone calls/ texts when she was out. Sooo - on one of these Fridays, the weak fuckwit goes to their local pub, gets pissed and decides to shag local barmaid!!!
After much heartbreak and angst, sister and BIL agreed to try and save their relationship. Things came to light about lies told by barmaid to husband about my sister. Barmaids sister was actually one of my sister's best friends and barmaid told my BIL that my sister had told hers that she was having an affair with someone.
Tragically, in August last year, my sister died after several months of illness. BIL and I have been supporting each other until yesterday when I found our that he is still seeing the fucking barmaid!!! (thanks Facebook). I am so upset. That bitch made my sisters last year on earth fucking miserable. I don't begrudge BIL happiness or a new relationship but not with her! If I ever see her again I won't be responsible for my actions! BIL doesn't know that I know yet and I don't know what I am going to say to him. I know it's no longer my business what he does with whom but I know my sister would be crushed if she knew that he had ended up with this woman and I can't help feeling crushed on her behalf
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If you are still with me - any advice on how to handle things?