Question: I went to college last year with...

I would say at LEAST an 8. I dated someone for four months and was constantly being told my mom, my sister, my sister-in-law, my friends, and my sister's husband that he was not right for me. They thought he could be polite when he wanted to but could also be a racist and sexist asshole (which WAS spot on...I just chose to pretty much ignore it for a very long time).
One of my closest friends close to hated him and told me so quite frequently...I wish I would have listened to her, because it would have saved me a lot of heartbreak. When your best friends notice that your guy has issues, it means he has issues. Listen to them. Love is blind, which keeps you from viewing his problems properly. Your friends, however, are not blinded and can see him more clearly. And never, EVER lose a friend over a guy. It's not worth it.

She is probably feelng jealous. You have been together and faced the world together since 8th grade and now you have this wonderful man your life. She is probably thinking he will replace her.

My best friend was never like that, but when I would start to "ignore" her as she would put it, I would tell my boyfriend at the time I need some girl time with her. Just being with her and only her doing random things for a weekend is all she wanted.

I would offer her a weekend of just you two. When I say that I mean just you two, no cell phones, no computers except to see movie times. She needs to know you are still you and that she means something to you.

One of my older friends tried to do a weekend and spent it all on the phone with her boyfriend. While my phone was off and I didn't talk to my husband. It hurt knowing she was picking him over me, but I had to give up that fight it wasn't worth my frustration.

I hope you and her figure it out, my best friend from junior high is still my best friend and we make it work. It is hard at times, but I wouldn't trade it for anything.

Maybe she's jealous. You're away from home attending school, you've been her best friend for a few years and now she's having to share you with someone else.. that's a hard thing for some people to do. If she won't even talk to you about it then she's being very childish and you should attempt to move on. Or if all else, she could secretly be a lesbian and is madly in love with you and that's why she hates this guy so much. *Shrug* I don't know, but I would try talking to her about and telling her look if you don't quit this and talk to me then we're not going to be friends any more. If she opens up and talks to you, great, if not oh well there's a reason she's leaving your life.

I've been in the same situation before and so has my sister. Looking back...my friends ended up being right about disliking the guy I was dating at the time. It's hard to see it while you're in the relationship, that's just the way life works. But honestly, you should always put your friends first. They're the people that you need there for you in between and during relationships, they're going to be there when the relationships end (or so you hope). That's why its important to keep your friendships strong. Maybe your friend sees something you don't, or maybe she's jealous that you're not spending so much time with her. Either way, you need to work it out. Friends are far more important than your relationships in the long run. Hope this helps and best of luck to you. I hope everything works out.