I'm frustrated. My "bff" texted me today (i ignored the last one) saying, oh i think you might be mad at me? No shit.…

I'm frustrated. My "bff" texted me today (i ignored the last one) saying, oh i think you might be mad at me? No shit. Yes I'm upset because I'm always here for her whether its to vent, cry, etc over the phone or in person. He reason is because she has her 6 year old son. I told her about my birthday plans 3 weeks in advance IN CASE she wanted to come. She said she has her son that weekend. Ok, fine. But then follows up with, she's not having a babysitter watch him on her weekend thats not fair to him. I understand that. But she went out for new years, she went camping, etc he reason is she doesn't have her son her ex husband does. My thing is, I have ONE birthday a year, I NEVER see her UNLESS she has a relationship problem then she will be here for a week straight. But its unfair to get a babysitter for 1 hour for spa? she lives 5 min/walking distance from it. I mean its cool, dont come to dinner or go out dancing bc now theres an excuse, Im not going to a club (its a gay club, no men hit on you) bc she feels its cheating. Hint: if you werent messing with 2 dudes this fall you wouldn't feel like going dancing with a GROUP of friends is cheating. How about I do the same thing? I say I'm going to something important to you then NEVER show up And NEVER tell you I'm not coming? I can be inconsiderate too. Like wtf. Im done.