Arry_Stark

Yes, that's only in the books. There she talks with Olenna and Margaery and Sansa thinks she'll get married to Loras but he's a member of the Kingsguard so it's actually Willas (his older brother and the heir to Highgarden) she has to marry. In the show Loras was the heir to Highgarden and never a member of the Kingsguard so Olenna wants her to marry him but Tywin doesn't want to give Sansa to the Tyrells so he marries her to Tyrion.