Is my position toward the married man I love correct, and is his position correct, and what should we do after that?

One must avoid speaking privately with a non-mahram (definition) man and interacting with him only within the framework of official work, without delving into personal matters. Satan flows through a human like blood, and he is a clear enemy who wishes to drag a person into God's displeasure. If the man is sincere, he should propose marriage, as feelings alone are not enough. One should not allow Satan to lead a woman into the forbidden under the pretext of advice.