Hey Varun.

Sorry to hear about this man.

Whatever you said is true, but also false at the same time.
Because what religion would mean to a person may not mean the same to another.Everybody is different and they relate themselves to their own religions in different ways.

It's like everyone has a different connection with god, some fear him for being punished, some consider god as their friend and so on.This difference in perception is because everyone is different.

That's really good and sincere of you if wanted to change your religion to her religion, I respect your feelings, but this is definitely not something I would ever suggest to anyone.Never change your religion just for the sake of satisfying your loved one, because you're giving up your own values just so that you could share a life with the one you love, and this might cause you to regret later on in life, this might even upset your parents who have been there for you always.Converting to a religion is legitimate when your own soul is attracted to its religious philosophy, mentality and its way of life and you're deeply convinced that you really "need" to take this on, otherwise not !

This is life man, it hits you hard sometimes.You just need to detach yourself from your emotions for a while, and think in a rational way about what has happened and conclude a meaning from it and let it guide you further.Don't spend too much time judging and holding grudges within because it'll only make it worse.

What you've experienced is something which many others have gone through.I know some Sikh guys who couldn't marry the girl because the family didn't agree because they were Hindu.

In the end it is not the religion to be blamed at all.
Some might place more importance upon their religion than a love relationship and some may not.
It all depends upon the kind of connection they have with their religion, because religion is very personal, and one just needs to respect the other person's perspective regardless of whatever religion they come from.
In this case neither of you (you and the girl) are wrong in my view, it's just a difference of value system and both should just understand and respect that, and move on.I know this sounds not so easy, but I'm, sure you'll cope up and will be fine.

I hope you get my point.I can understand the kind of dilemma you must be going through.
Take this as a life lesson, this will toughen you up and will teach how to manage your emotions better, and you'll be a better judge next time before you fall for somebody because you wouldn't let emotions come before wisdom.
Don't belittle yourself, always look towards the brighter side and hope for the best, may be one day you will find your perfect soul mate, or who knows your parents might find you the perfect one someday.
You're still young man ;) lol.

Life has a lot to offer than just love.Start focusing on the things you want from life, make a list, plan for it and work over it.Channelize this pain into something that will sharpen your focus on being more successful in life rather than letting this pain take control of you and do nothing good to you.
Make that inner shift in yourself, and just follow your dreams.

Keep your chin up and walk tall.
All the best bruv.

Feel free to pm me anytime.
Take care :)