Why did Tytion seem so sad about Jon and Dany fuckn together?
I have 3 theories.
He thinks this is going to complicate things regarding the upcoming war after they kill the night king.
He plotted with Cersei and Jon Snow is part of his plan somehow.
He is jealous, i remember a scene on the last season when he said to her "Daario was not the first to love you and would not be the last" , he said these lines like implying he loves her.