Should I forget her and if yes how?

I love her, but she doesn't respond. I decided to forget her, but I became sick due to love and it is hard for me. I am still sick. My blood pressure got at 16, toothache, heartache, etc... Can I forget her at all IF I WANT in your idea? I can't even walk well due to left foot became painful.. I always got toothache when wanted to forget her and fighting w/ myself. But this time it is much worse. I wanted to forget her VERY SERIOUSLY, and I became sick very seriously. All of my stomach and chest got pain yesterday so. I know because she is formally Jew, I have problem marrying her since my mom's grandma didn't expose their Jewish identity when in Iran to nonJews and so not Jewish enrolled here. Iran is hard in behaving and not really allowed by now due to Shia bias they have which is type of against Freedom in Iran.. Idea?

Thanks!