My advice is don't even watch Season 8. Seriously. Not joking. Don't watch it. It's going to ruin the whole story for you. I'm sorry for you that you even watched Season 7, but season 7 is sort of a mixed bag, so you can still quit now with an overall warm and fuzzy feeling about this amazing show. If you watch Season 8, your feelings about the show are going to be effed. And this is coming from someone who makes jokes all the time about
@Synsensa hating everything. GoT was soooo good, but the ending season(s) was just botched beyond belief.
Resist the temptation. Don't watch Season 8 out of a desire to "see how things turn out". You will be so pissed if you do. It will be like having the most delicious feast with all your favourite foods and such a savory taste in your mouth, only to have the dessert be rancid, moldy, give you food poisoning and make you vomit... whole meal ruined. Meal was so good, but just completely ruined by the dessert.
EDIT: Oh poop... just noticed that you already watched it. Well my warning stands for anyone else who is going to watch GoT. Watch Season 1-6 and just treat it like one of those fantastic shows that gets cancelled too soon, right when it is getting really good. Season 1-6 is a masterpiece. Much watch. If you really can't resist then go ahead and see season 7. But under no circumstances should you see season 8. It's just not worth your time. You just have to accept that you can't see the end of the story. It sucks, but actually seeing the end is worse.