I love my sister's husband, and I don't know what will happen?

A Muslim woman must fear Allah and not be lenient regarding the hijab, looking at men, or being alone with non-mahram men. It is not permissible for her to love a non-mahram man, and if she is married, the sin is even greater. Likewise, it is not permissible for a sister to seek the divorce of her sister from her husband, based on the hadith: "A woman should not ask for the divorce of her sister to empty her vessel." She must strive to forget the man and occupy herself with what benefits her.