Whenever I see a picture of my sister-in-law I find myself getting turned on, but I've never seen her in person... yet.
So you are contemplating seeing her in person one day? Then what will you do?
She lives abroad. So it is almost impossible but I plan to try my hardest to get to her one day even if it kills me.
Be aware that a sibling's spouse is sacred and they are off limits to other family members. It is quite taboo to make moves on someone like that and I don't think she would be open to a relationship with you.
Yeah, you're right. But, I hope that I will get a chance to do it when she comes next year.
This kind of a relationship is not meant to be. You should focus your efforts on another person who is not a family member. There are plenty of attractive people in the world and I'm sure you'll find one that will taken your attention off of your sister in law.