The guy complained that he can't get himself to stand up to his wife and explain how .. inconvenient this arrangement is. No need to say much more than that.

http://www.reddit.com/r/confession/comments/137owz/my_wife_makes_me_wear_a_chastity_and_its_not_for/

EDIT: apparently, the wife was cheating on him. She must have felt guilty, so she projected her guilt on him by making him a target of 'suspected infidelity'.