Threes a crowd?

I just keep seem to mess things up, once I finally start something good, a life I can appreciate and actually like who I am, I go and try to correct the other stuff. I try to write my last two remaining friends and tell them how much they don't invite me to anything, and how bad I want them to hang out with me again. So now one of them, the one I was really pointing the finger at is so mad at me, and I wasn't trying to blame her for anything. I was just trying to tell her. Everytime I would try to make plans with her, she would end up inviting someone else, or she would tell me she's busy the whole week. I've been trying and trying to tell her this face to face but I just couldn't get the time, or the right moment. So I sent them a message on facebook, just telling them how much it hurts me that they won't even ask me to hang out when they are both doing something. I was like do they not like me? or what the hell am i doing wrong, that makes them not want to atleast ask me to join them. Anyways, she's mad. Very mad. I really should just let go, let it all go. I have a family, and well a family. That should be it. Women arn't really supposed to have friends outside of their relationships are they? They should just stay home, cook, clean, work, take care of their babies, and ciest to exist. right? I don't know. I just hate losing a good friend, she and I were so close, we had so much. Now I feel replaced. I've excepted that because in literal terms I kinda replaced her with my boyfriend and my daughter, but I've always..ALWAYS made time for her. I always let her know when I was free. I ask her to go do things when I see her, and I make sure I atleast write her on holidays. I thought long about this letter, and after I sent it the only thing I wanted to do was delete everything and just try to hang out with them when they had time. I tried to put my feelings aside for so long, more than a year now. I just don't know what to do, or say. She always switches the blame. She shouldn't be mad at me, I didn't tell her I was mad. I just told her I wanted to hang out with them more. I wanted it to be more of a team instead of it just being them two. I guess I've managed to mess things up. We shouldn't even be friends, I don't think I even know how to have a "girl" friend. I just know I'll end up regretting this, I'll regret not having friends when my wedding comes. Or when I get old. I'll regret not trying. So maybe that's why I'm making this a big deal. Maybe this is why I mess up my fairytale to have it be a happily ever after kinda thing.