in season 9 episode 21 of Friends "The One With the Fertility Test" Chandler tells Monica they are both incapable of having a baby, due to low sperm motility and an inhospitable environment. I always assumed Chandler lied to Monica about his low sperm motility so Monica wouldn't find out she was the reason they couldn't conceive. (Even though there was no way to prove it). However, when the doctor calls and Chandler answers, he asks to speak to Monica...if something was wrong with Chandler, the doctor would've told him because he was already on the phone. And when Monica asked Chandler if there was a problem with him or with her, before answering, Chandler hesitates and looks off to the side a little before saying "actually it's both of us."
so basically all I'm ever going to think about is how Chandler probably did lie to Monica to protect her from knowing that she is the reason they cannot naturally have a child, the one thing she has wanted since the beginning of season 1, and now i have to cry for eternity
