help me find this manga!

I read this manga loooong ago, BL, it has a historical Chinese background. The MC/seme is a noble or royal in his first life, he had to get married to a man i dont remember the reason but he treated the luke horribly, even so the luke got himself killed saving the MC (some people plotted against him and he was removed from his position). he carried the luke's body and jumped off a cliff in the end?

then he reincarnates back to the night he and luke married (it was the night after wedding. WARNING- he raped the uke? not sure but the he was in a bad shape)