+2
I'm with Austruck. Sort of.
There is an issue brooding in Tyrion. Part would be jealousy in that the writers made a point either last EP or the one before to have Tyrion see Dany's expression change when she mentioned "...and that Jon Snow." He called her out on what is obviously a school girl crush. Her reply was, "He's too small for me." Which I took as yet another slight against him even now by his queen, to which he's given his entire life up to serve. He has believed in her in spite of her temperament.
That in context of his noted recent failures in war strategy, and now watching her play love affair with yet another man of power---something I think he will soon resent her for in a partial bout of jealousy---may be enough for him to lose faith in her and fall into some despair. That could set him up for a major turn or betrayal.
I think in the end he will feel a self-loathing failure for a series of knocks that have been compounding this season, and be purely miserable for it before his end. After all, that is where his character started. A drunkard seeking the company of whores because he was taught to never belief he could do better in life. He will soon realize he tried, but failed anyway. Taking a drink in Cercei's chamber was the first step down that rabbit hole of misery.
=D