Rash,
Your query does not fall directly in HR Management per se but suppose some 45 year old woman employee were to approach her HR Manager and explains her problem, then how he would respond, same way let me respond.
You have been enamoured by the 30-year old supervisor. While attraction towards opposite sex is normal but such attraction has to be bound by the responsibility to your family members. If this foolish and unreasonable fondness crosses it's limits then it will not just destroy your life but your spouse's and daughter's life as well. Your self-gratification could cause grave injustice to them. The supervisor is far junior to you. Your more than half of the life is over whereas he has a long a way to go. What if he responds your passion now but later abandons you say after 5-10 years? Then who will take care of you in old age? Disowned husband or a young daughter who faced trauma because of parental separation?
He could be responding to your overtures that has underdone of intimacy. But then these may not last longer.
Life partners are needed most after 60. Who will get what kind of diseases cannot be said. In India, there are millions of cases where either spouse has taken care of another ailing partner for the years together.
Hindu philosophy teaches us that kaam (prurience), krodh (anger), madh (arrogance), moh (temptations) and matsar (jealousy) are the main five enemies of a person. The strength of the person lies is not allowing any of the enemy to defeat him. Presently, the enemy called kaam is trying to overpower you. Therefore, rise and and fight with it with all your vigour. To gather strength, you may take help of professional counsellor.
The immediate solution could be to quit the job. Possibly your financial situation may not permit to do so but in the larger interest of your life as well as family, this decision would be sound decision. But in next job, make sure that you do no repeat this mistake.
Thanks,
Dinesh Divekar