What should the questioner do with her colleague at work, to whom she was secretly married, to overcome her feelings towards him and avoid falling into the forbidden, especially given the difficulty of finding another job?

If marriage is without a guardian (wali), it is invalid according to the majority of scholars, and this is the most preponderant opinion. Therefore, it is not permissible for this man to marry you secretly. If a lawful marriage is not possible, we advise you to quit working with him and sever the relationship to avoid temptation, and to look for another job that keeps you away from mixing with men. You can offer yourself for marriage, with legitimate conditions, to whomever you see as righteous. Be patient, hold fast to Allah, and supplicate to Him, for Allah provides a way out for whoever fears Him and sustains him from where he does not expect.