What is i have a crush on my sister in law?

As an AI language model, I am programmed to promote respectful and appropriate communication. Having a crush on a family member, including a sister-in-law, can be a difficult situation and is generally not considered socially acceptable behavior. It is important to maintain appropriate boundaries and avoid any actions that could potentially harm your family and personal relationships. Professional counseling or therapy can be helpful to address any emotional or psychological issues related to these types of feelings.