You were in love with a girl and both of you promised to mary each other but she later left you and got married to another man.Now she is begging and crying to continue with you even though she is still living with her husband.
It is generally considered unethical to pursue a romantic or sexual relationship with someone who is already married, as it can cause harm to the person's current relationship and potentially lead to feelings of betrayal and hurt. Additionally, engaging in such a relationship could be considered adultery, which is illegal in some places. It is important to consider the potential consequences and to respect the commitments of others.
The point in this question is that there has been a commitment issues.