Any yaoi where the uke and seme have a past together but they don't remember?

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

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

its omegaverse btw

http://www.mangago.me/read-manga/biting_the_tiger/
http://www.mangago.me/read-manga/red_candy/
http://www.mangago.me/read-manga/totally_captivated/
http://www.mangago.me/read-manga/circle_trap/
Here, one of them remembers but the other doesn't:
http://www.mangago.me/read-manga/black_mirror/
http://www.mangago.me/read-manga/paid_fujoking/
http://www.mangago.me/read-manga/antinomy/
http://www.mangago.me/read-manga/a_man_like_you/
(Hope that helps!)