:)

http://www.mangago.me/read-manga/today_we_continue_our_lives_together_under_the_same_roof/

http://www.mangago.me/read-manga/dousei_seikatsu/

there's plenty...and many don't go around stressing how *secret* their relationship is all.the freaking time....Dousei Seikatsu and Today we continue our lives together are the ones that only immediately came to mind