In those days marrying a 15 year old is normal , nothing wrong with that in those days. He is doing what's best for the throne. He is Walter White and he takes no half measures. He got rid of his Jesse ( Roz ) early she was a bad investment . His Hank is Varys and Skyler was Cat. Tuco is the fake king Joffrey . He thinks ahead nothing wrong with that. Sansa will be 18 in a few so why not have lined up for marriage down the line?
Yeah, I let the pedo shyt slide but he still has the weird obsession and Naw, I really don't see how he's doing what's best for the throne, from the looks of it he's trying to crush monarchy. Stannis is the one that's trying to do what's best for the throne (the whole world too) and I'm not even a fan of the dude. If Littlefinger really cared and thinks ahead then why isn't he doing anything to help the NW?