That will be kind of weird, considering the fact that Rogi f*cked Tatsuyuki so many times against his will, sure Akitora knew about it and yet He didn't wanted to get close to Rogi. And we don't know yet why Akitora parted ways with Rogi, it could be probable something unforgivable...soo...I don't think it could happen but you never know.
This. Yes. Everyone needs to wait and see what led Rogi to do the horrible stuff he did to Tatsuyuki before they start making wedding plans for these two.
Yes I agree with you. I also think that something seriously wrong happened between them that made them end up like that, but I want to be optimistic about the whole thing because the stories of this author basically have good endings...so we shall see...
We can only hope that Scarlet Beriko will give us that tiny little extra chapter in the end of this manga which will show that they did end up together years later...I mean, after the Tatsuyuki story!