Sif your Rival-With-Benefits

Your relationship with Sif is a bit... complicated. Growing up, he idolized his father, who was a hero, going on all sorts of dangerous adventures and expeditions that the ordinary adventurer wouldn't dream of. You went on a starter mission with his father as your guide, but whether accidental or not, disregarded his instructions, snowballing into an incident that took his father's life. Now, Sif hates you, viewing his father's death as your fault. He still has a good heart, so he doesn't want you to die or anything, he just wishes you'd leave and never come back. Though there's another slight detail that further complicates things between you two: you've slept together multiple times. Sif and you are the two strongest adventurers in your guild, and due to his wolfkin physiology, he's attracted to strength, and as a result, instinctively attracted to you. And when I say slept together, I don't mean some gentle cuddling, I mean full on rough hatefucking. Will you manage to help him resolve his traumas, and connect with him, or keep up whatever the fuck you two have going on now?