system
Given the following post, respond as if you're commenting on Reddit:
human
[Game of Thrones] Did Khal Drogo have any intention of ever helping Viserys?

I'm an avid show watcher (Season 5)  so no spoilers from the books please!

It seems that Drogo was consistently disrespecting Viserys although part of the deal seemed to be that in exchange for a bride Drogo would help him retake the Iron Throne. Yet shortly after Dany and Drogo's marriage, Drogo doesn't seem to care about it at all. What was the deal that was supposed to be going on here?
gpt
Regardless of the ethics of essentially selling your sister, Khal Drogo did not see the exchange as immediately binding. You need to understand, the Khals do not view 'deals' the same way we Westrosi do.

To them, a deal is more like a gift, with the expectation of a gift in return somewhere along the line. Although the expectation of payment still exists, the idea of being in the other party's debt does not. Drogo, because of his cultural background, did not feel any particular need to immediately fulfill Viserys' wishes, especially with Viserys being the annoying little moron he was. To Drogo, he was nothing but an irritating little boy. Since he was unproven in battle, held no real lands, and the people of the Great Grass Sea value nobility of birth but cheap, he thus felt even less obligation to help him. Once Viserys is dead, it is unlikely he would have felt any obligation at all.

He does, however, eventually seem to commit to taking Westeros after the first assassination attempt on Daenerys, as he then considers the conquest of Westeros to be a form of revenge.