Liars

I just need to vent. 
How in the hell does someone lie about being pregnant for ANYWHERE FROM 8 WEEKS TO SIX MONTHS. 
I am absolutely mind fucked right now and my heart hurts so bad because it's supposed to be someone whose my best friend. I've invested so much into her and those "babies" that haven't been there for god knows how long. We moved out tonight and I'm trying to stay calm for my baby's sake but I just want to break down and cry and just go crazy.