LOLOLOLOL! somehow i feel that this is a made up story. i am just trying to envision a woman who feels free to talk with her husband while having sex with somebody else. that should make anyone, however, immoral or unethical he/she may tend to be, grossly uncomfortable. height of infidelity!

anyways, coming back to the story, just tell her to leave a busy message on her phone while you guys are at /into 'it' :  "we were trying to cross over the bridge, it's flooding and we both are being swept away. please do not disturb while we drown"