Jon had almost lost control yesterday night. The libido of a body in the peak of youth was high. It seems that the consequences of the rituals had amplified it even further. Thankfully, he managed to reign himself in before he did something foolish. Once he bedded Sansa, he knew that he would not stop, consequences be damned. But his cousin was too young to realise the full extent of such a relationship and what it would entail. He was not opposed to marrying her, as he already knew Sansa and was physically attracted to her. But she could just be carving any positive attention from the only familiar person in her surroundings, and coupled with raging teenage hormones one would easily get a recipe for a disaster. Jon would rather have a healthy and solid relationship, instead of one built on shaky premises, as he knew those soured and fell apart rather quickly.