Uncle Owen was actually very protective of Luke because Luke was one of only a few omegas in their area and not many people were that nice to Luke. Now, Luke is around Han, who is alpha, as is possibly Leia. He's not used to being around alphas this long, particularly when they're lusting (aka Han) and his body isn't sure of what it wants.
Han senses his distress and backs off a bit, but can't resist a few cuddles here and there. Eventually Luke confesses his feelings and Han helps him work through them. Later claiming and such.
Han/Luke, Luke's an inexperienced omega
Uncle Owen was actually very protective of Luke because Luke was one of only a few omegas in their area and not many people were that nice to Luke. Now, Luke is around Han, who is alpha, as is possibly Leia. He's not used to being around alphas this long, particularly when they're lusting (aka Han) and his body isn't sure of what it wants.
Han senses his distress and backs off a bit, but can't resist a few cuddles here and there. Eventually Luke confesses his feelings and Han helps him work through them. Later claiming and such.