I need to get this off my chest, I have a very special friend that I have known since middle school(I am 24 now).  I have never had many friends in Middle school/High school even now, I had Autism, social Anxiety, and low self esteem, but the friends I do have I stick to like glue. One of these friends was my Best Friend in high school( I also knew her in middle school but I didn't know her well at the time) she was always nice to me, and she even let me sit with her and another future friend, it was great, me and my two closet friends. Anyway I started to develop strong feelings for her but unfortunately I never had the courage to tell her how I felt, and I also didn't want to ruin our friendship, and I don't think she was interested in me anyway( about that she is an extrovert and Tom Boy, who loves to talk to people, and she also has a lot of friends. Well one year I graduated High School and went off to college, and she eventually went to my same college a year later, and after a year of isolation I thought it would be awesome to see her again. But something changed, it felt like she was loosing interest in me, in the morning when we would get on the bus she told me that she was tired, but then on the bus she would sit with a group of friends and she would laugh and have conversations with them, at this point I was feeling like I was more like friend #5 instead of a close friend. But I was also being weird, because most of our conversations where awkward silences, and I just felt like we were drifting apart, I had never felt so alone in my life. Flash forward 6 years and I don't see her at school, and she works, but one day in July I decided to call her, and see if she wanted to go bowling with me and another high school friend, and it was really fun, and we both enjoyed each other, it was great, and we did this a couple of times, but when me and her made plans to do it again, she asked if she could bring a friend, not really thinking I said sure. Well the day comes(Yesterday) and she brings a guy friend, I won't go into detail but to me they seemed like more than friends, they where both flirting especially the guy, putting his arm around her, and flirting with her. It was one of the worst day I Have ever had, and I was actually getting really jealous, A few times I was ticked, like when he was touching her, on the outside I was cool but on the inside I was like STOP TOUCHING HER, I almost wanted to punch him, I have never felt this way before, I was just completely heart broken.  Continue 

Let me say first off that the feelings that you're being rejected as a friend may or may not be true. I think she wants to be your friend, but has forgotten what's important, to an extent. Feeling left out is fine. She has moved on, but probably not in the best way. I think you should talk with her about your feelings, and see how she responds. Be prepared for anything she might say to you. And if she doesn't want to date you, then see if she's willing to continue being your friend, while realizing that most of her attention will be paid to her boyfriend. I hope this helps!

Dude it was her lost, there are more fish in the sea brother, I guarantee she will be missing you soon enough. Remember a life worth wondering ain't a life. Besides be as free as the wind, and twice as fast, with that outlook there ain't nothing that can take you down. Besides when you get that amazing job go back and see her smirk and say see what your missing. Remember always leave them wanting more. And when she wants another chance with you just say fool me once shame on you, fool me twice shame on me, fool thrice i'll be digging my grave. Once you say that walk out smoothly.

Listen man, this happens a lot, so at least you know you're not alone. Though I KNOW that doesn't make it feel any better.

The thing about many girls is that, when you are close friends at a young age, it's very hard to exit that friendzone.

After so many years, she moved on, which you can't blame her for. But at this point, ask yourself, "If I asked her out, what's the worst that could happen?"  The answer likely is she'll say 'no' and you wouldn't have a comfortable friendship anymore. But do you really have a friendship with her now? It seems like it's a once and while thing, and you may be loosing her to another guy.

Now I can't tell you what to do, cause I don't know her, and I'm not in your shoes. But it would seem you'd have nothing to loose than just confessing to her, not in a creepy "you're the only girl I've like to 10 years, marry me", but in a "hey, I really like you, you're a great person, and I'd like to know if we could see each other as more than just friends", or something like that. But be prepared that there are good chances she'll say 'no'. But at this point, so what? It's your only chance I think.