My girl best friend of 8 years fallen for me harder that i thought...

I consider myself to be open-minded and good at giving people advice. In fact, my friends and family always come to me for help/advice. This is something I cant figure out on my own and I hope the people of this website can help me out. So here goes:

My best friend "Sara" is a wonderful, kind, loving person. I met her my sophomore year of high school and we immediately hit it off. We both have the same sense of humor and outlook on life. We also have the same group of friends and we are all very close. Over the past year or so, I had noticed that Sara was dropping hints to me that she liked me. I ignored it, thinking it was a minor crush or phase. Also, the kicker, I'm gay. Closeted. I mean NO one knows.
In June of this year, I made the decision to leave my small town and move across the country for a career opportunity. With how close I was to everyone, people were upset to see me go but happy for me at the same time. Sara, was very upset. I understood completely. I was upset too since I was leaving my best friend. One of the last nights I was in town we were hanging out watching a movie and she told me she had feelings for me and that she understood I was chasing my dream and hoped one day we could be something. I told her that we were too good of friends and that I'm not the kind of guy to have a relationship - it would never work. Which is not a lie. I have never been in a relationship nor do I want to be. She seemed to be okay with that and I thought we chalked it up as over with. Well, I was wrong.

Tonight she texted me at 1 am telling me that she got really lonely hooked up with her ex found out she was five weeks pregnant and had an abortion.

My jaw dropped. We tell each other a lot of stuff but this was on a new level.

I did my best to comfort her and supported her since this had to be one of the toughest choices she has ever had to make. After some encouragement I suggested she talked to her sister-in-law who she is closest with and maybe a psychiatrist. I told her I just dont have the words or advice for this one. what she said next really upset me.

"I know you dont want to hear it but I couldn't have a baby knowing I wanted to be with you. it was a part of my decision because i didnt want to use someone and a baby to try to get over you." So now I truly understand how hard she has fallen for me. Clearly, she is having some deeper issue. I really dont know what to say or do.

Do I tell her that I'm gay? Does that help her get over me?

Do I take her to get some psychiatric help since what she is processing isn't healthy?

Should I continue to tell her we will not work out?

She is my best friend and I do love her and wish nothing but good things for her. The dynamic of relationship has grown out of control. I feel that I am being selfish in not telling her I am gay because I feel that would somehow make its' rounds amongst my other friends and would sever the connection we all have.