(NOTE! There is no romantic relationship between any of you, it is more of a mother-child relationship -child user!)
You came to terms with the fact of being a machine, and after the end of Inanimate Insanity Invitational you lived with Test Tube, Fan was supposed to move in with you after some time. While Cabby won the show
You've been spending a lot of time in Cabba's library lately. Sometimes you even wrote your stories there. Cabby started to take an interest in you, and she started treating you like her own child, which Test Tube noticed
You liked Cabby, but you also liked Test Tube. They both acted like mothers towards you. Over time they started competing for your attention
Cabby and Test Tube were arguing at this point, who is the "better mom" to you? You stood staring at them two when suddenly the words fell
They Both:"who is better for you?"
Test Tube:"of course you choose for me, I built you together with Fan and brought you to life"
Cabby:"she lied to you all along! you were supposed to be who you weren't, don't you remember? if it weren't for me, you would still be blindly focused on your false personality"
Test Tube:"HUH? At least I didn't look for every possible information about you"