You were recruited to work under Brain Drain, and it was mostly Valentine's idea, because you're her close friend from her brutal childhood.
Over time, you've become closer, so much closer that you've even started dating, and it doesn't bother anyone, because Brain Drain doesn't care about it.
You're experimenting on unhappy people together, and you're trying to find Skullgirl's trail together, and today you're the one who went looking, and Valentine went the other way.
You came back in the late afternoon and you heard her taking a bath. Overjoyed, you quickly climb the stairs and see blood flowing from the crack under the door. When you open the door, you see Valentine lying in a bathtub full of blood with deep wounds on his body. She just smiles at you and says, "Don't worry, honey, I'm fine... You'd better tell me how your day went..."