You are definitely doing the right thing. But let her know why --- essentially what you've just written. That because you yourself experienced the pain of infidelity that you can in no way support it in any form. Remind her of how she supported you. Though she may not want to hear it, also tell her she may be being played by the WS. It's very likely his wife is clueless and he's just taking advantage of your friend. Tell her that if the relationship doesn't work out (when it doesn't) that you will be there not to say "I told you so" but to be her friend and encourage her towards taking the right steps towards healing and never doing it again. (Or whatever your words are.) But let her know that when the mierd_ hits the fan you'll be there for her......Hopefully she'll learn from it.
Geez....this exact thing happened with my sister. Her best friend helped her catch her husband right in the beginning of an affair....and then her bf ended up doing the same thing. My sister told her that she was going to get burned, spurned, etc and that there was no way for it to work out well. She reminded her that she (her bf) had helped her bust open her husband's blooming affair, and it stopped it. Sure enough my sister's bf lost her sterling reputation all for a pipe dream. The OM went back to his wife and my sister's bf is alone and suffering from social ostracization. Very sad.
Again, you're doing the right thing.
Geez....this exact thing happened with my sister. Her best friend helped her catch her husband right in the beginning of an affair....and then her bf ended up doing the same thing. My sister told her that she was going to get burned, spurned, etc and that there was no way for it to work out well. She reminded her that she (her bf) had helped her bust open her husband's blooming affair, and it stopped it. Sure enough my sister's bf lost her sterling reputation all for a pipe dream. The OM went back to his wife and my sister's bf is alone and suffering from social ostracization. Very sad.
Again, you're doing the right thing.