Is \"Live-in Relationship\" Word Is \"sexual In Nature\".

Respected Sir, I am working in a PSU and came in close contact with one unmarried girl in year-2013 (She is a colleague of mine). However nothing sexual happened between us and I have never ever touched her. I got married in year-2014 and she is still single. In June-2016, as she was worried about her marriage and was very depressed, I just proposed (messaged) her for a \"live-in relationship\". Her family came to know about this accidentally and things between us ruined. Now (in July-2019) she has filed a departmental sexual harassment case against me based on that single message of mine. In her complaint, she attached some of mine other messages also which are not having any kind of sexual content. Two main questions for which I want advice are: 1) Is \"Live-in relationship\" word is \"sexual in nature\". 2) Is it illegal in India for a married man to have a \"live-in relationship\" with an unmarried woman. Please help as my job is under threat. Regards, vijay