Masturbating with a condom?!?

Last week I cleaned out our nightstand/condom drawer. Theyre were alot of opened but unused condoms. i have noticed these in the drawer before when we were dating(we are newlyweds) but i never mentioned it and just threw them all away. Yesterday i got home from work and opened the drawer and found an opened condom wrapper with the condom still in it. it seemed to be unused but touched. Cheating is out of the question..we are always at work or together. also we have a greaat sex life. everyday if not..everyother. However yesterday..i went to work earlier than he did. & he woke up 20 min early than he usually does for work, i know this cause he texted me. whats with the opened condom?!?!?! why not just jack off in the shower. so confused!!