I have feelings for her but she has a boyfriend

Disappointed man

Address your feelings, analyse why you have this feelings? Ofcourse because you are human and humans do have feelings. 

When it comes to others there is always a good reason why you feel someway about someone?

How you've been treated by the other person everytime you had an encounter with that person?

Why you feel there is a connection?

Yes! Pheromones there genetic make up and other aspects that make us feel attracted towards someone is there but you will be attracted once, twice or as long as the person is around. You will eventually forget about the person in the long run. But if that's not happening then there must be a good reason why you can't let the person go.

What is it that is missing and why do you want to be with this person?

Okay! What is the ultimate thing you want with this person?

What kind of relationship you want with this person? Give yourself time.

Life won't be and it was never about you and your own self. The people in your life makes a good amount of difference to the kind of life you will live. And you can't always choose who do you want to put into your life. You believe or not before you were born, your soul existed and your soul has contract with other souls about how your life will be with whom you will be and it is already been decided by your soul into what kind of household you will be born, who will be your parents and what pain you will go through in this life.

So, why are you worrying about she having a boyfriend?

Who is a boyfriend? It means nothing.

Who is a girlfriend? It means nothing.

You can be somebody's boyfriend someday and be somebody else's the other day.

These are shallow relations created by the so called modern people as if people are products that will be tried for some months and kept only if the user likes it.

If you do not intend to marry the other person do not get into a relationship. If you intend to marry somebody who is right for you. Get to know yourself first, try to live by your own only then you can be there for your loved ones and support them. It takes a strong man. Be strong man. Cry out your heart feel this painful feelings and let her go.

You are holding on just because it is painful to live alone and you think you will be lonely. Surrender to God. He is our only saviour. You can be of any religion, have faith in your Lord. Get to know your God. Don't follow what others told you about God. Find it yourself. Do your own research about God.

Only then you can find your real self and be who you actually are. And attract a partner who is right for you.