Friend Makes Me Feel Completely Worthless

It's been going on for about two years. I've been meaning to tell her about how it's made me develop dangerous/suicidal thoughts, and I've wrote a list to rehearse when I tell her:

•I feel like I shouldnt be around you anymore. One because it does make me feel bad, really bad, to the point where it became my main reason for going to therapy in the first place. I know it isnt completely your fault again, but when you and the other person completely ignore me, making me feel like some invisible third wheel, it really hurts. Its bad for me and while I really do try to befriend them as well, they are not interested most of the time, and it makes me feel worse, like I was something that shouldnt be there.

•I feel like I drag you down a lot. I feel like I waste your energy, and keep you from fully enjoying another persons company. I dont want to be like that.

•When it came to any task, people always go to you. It may be because of your popularity for being a potential co-valedictorian, but when people usually go leave it [her] I cant help but feel guilty for giving you a lot of work, but also angry because I cant help but feel like it implies that they view me and other people as incapable of producing good work. I feel stupid around you? Or like Im not worth anything.