Yeah, quite simple. Ensure that your relationship is built on honesty, transparency, and trust. Be open with her, willing to openly communicate about any topic.

Yeah, quite simple. Ensure that your relationship is built on honesty, transparency, and trust. Be open with her, willing to openly communicate about any topic. Ideally, she should return the same, and thus, would be more than willing to tell you with whom she is chatting with upon you showing her even the tiniest bit of concern for her well being and for the longevity of your relationship.