Our expert says:
the best is to setup boundaries in your relationship with your sister inlaw even if they are just limited to your own knowledge. by doing so she will (hopefully) follow your lead and ease-off on the chemistry / flirting. your family (as a whole - kids, wife, ect) are far too important to sacrifice for an affair!
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.