Why theodor betrayed her again?

I think they didn't really explain it, but if I understood well the people started trusting her more than him so he commanded her to kill him and become empress for both her sake and the empire's but that's my assumptions

Thanks !!
They loved each other no ? I wonder why he didn't make her the empress... It's still better than killing lol

I posted the spoiler 5 comments above yours and I'm too lazy to rewrite it (〜￣△￣)〜

I will check it ! Thanks