Author's Notes: My friend said she wanted "possessive, sad filth" and I was just like, haha okay. So this is just like a what if scenario I got in my head (about Blake learning some things from her time with Adam :D), and it's very much possessive, and sad, and filth, so I hope you all enjoy it. Or cry. Crying's good too.

Weiss Schnee didn't know what she did wrong.

There were a lot of things she could have done wrong, and often, she knew, she couldn't help but do them wrong. There were things she just wasn't good at, things that she had tried to be good at but ultimately failed at. Important things, like being a good, supportive partner, and teammate - though in her defense she was getting a little better at that - and by extension being a good girlfriend.

That was just what she personally thought, no one had ever told her that she was doing bad before. But she knew she was. There were times when she pulled away from a kiss a little too quickly, or didn't show as much enthusiasm as she would've liked to when being shown something by Blake.

She was also worried about leaving Blake unsatisfied. In any way. Whether that meant in bed, or the amount of time given to her. She knew Blake was sensible about things, she trusted her completely to know that she still had to do her school work, and she still had to train. She still had to hang out with Ruby, and Yang, and JNPR; she still had to be a good friend all the while.

But still, Blake knew best in her eyes.

Which is why she was wondering what, out of the possible list of things she could have done wrong, did she do?

"Blake…?" Weiss mumbled, worried that Blake was going to jump straight into screaming at her. She let out an unsure sigh of relief as Blake didn't, and just continued to stare her down.

They had just got back to the dorm from their walk, but Blake had been silent for the past twenty minutes. It had been the most awkward, tense experience of Weiss' life so far. No conversation, just silence. No responses, no glances filled with calm respect and love. Just blankly looking forward while not saying anything.

"Weiss, why did you look at her that way?" Weiss flinched. Not because of the words, but because of the spite in her voice when she said them. She had never heard Blake speak in such a way since they had first become a team. So long ago, when she found out that Blake was a Faunus.

But this wasn't just spiteful, it was downright angry.

""Why did I look at who in what way?" Weiss asked, trying to think back. There had been a small group of girls that walked past them on the way back, but that was about it. The walk was mostly devoid of people.

"On the way back, one of the girls in that group… You remember. She looked at you, you looked at her. I saw the look she gave you, and you just kept looking." Blake bit her lip, closing her eyes as she said it. "And then you smiled."

Weiss clenched her teeth. She did look, because she was trying to figure out exactly what kind of look it was. It was a friendly look, she surmised. And she had returned it with a smile. But how was she to know Blake would be watching her and think of that smile as anything more than that?

"I did…" Weiss admitted, not wanting to lie. She shifted uncomfortably under Blake's stern gaze.

"So you admit it, you did smile at her. You saw the look, and then you smiled."

"It was a friendly loo-"

"It was a flirty look, Weiss, I saw it!" Blake shouted, and Weiss instinctively covered her ears at the outburst, causing Blake to narrow her eyes. She moved Weiss' hands away from her ears, causing Weiss to freeze at the sudden, direct, and honestly aggressive physical contact. Weiss let out a gasp that Blake ignored.

Blake had never, EVER touched her without her permission before. She had never broken that agreement. She knew how Weiss felt about physical contact. But now it seemed like she just didn't care.

This was wrong, this wasn't Blake. Not usually. Sometimes she got a little bit pissed off when Weiss made an honest mistake and didn't realize someone was flirting with her, but this was new. It was terrifying.

"Weiss, listen to me when I'm talking." That was a command, Weiss noted. A command. Not a request. She held her arms against her side tightly, feeling like she had no idea what was going on anymore. She nodded. "Good, now say something."

"I-I-I… I promise I didn't know it was anything more than a friendly smile." Blake shook her head in disapproval. Apparently that wasn't what she was wanting to hear. "B-Blake please, why are you acting like this!"

"Because you're mine, Weiss! Mine! You're my girlfriend, my best friend, and no one is going to take that away from me. Especially not you." Blake growled out.

Weiss' didn't know what to think of her now. She had become another person entirely. She felt like crying, but she didn't want to show that she was scared, or worried. She didn't want Blake to know she was making her feel like shit. Because at this point, she thought, why should I burden her further? Why should I make her feel worse than she does now?

It occurred to Weiss that this explained everything that had ever happened before. Blake was jealous. Horribly jealous. It also occurred to Weiss that this meant Blake didn't trust her. Not like she thought she did.

This brought on tears that she couldn't hold back.

Weiss started to sob, finally moving her arms from her side to wipe the tears away. "I-I don't… Why d-don't you trust me? I promise I didn't give her a look! I just smiled, there was nothing else there!" Weiss' lip trembled as she wiped her tears on her sleeve. If Winter could see me now, she'd pity me. Father would think I'm a disappointment. You can't even make your girlfriend happy, you think your family would be proud of you?

"I don't trust anyone!" Blake shouted, feeling the urge to punch something hard. Unfortunately, even in her current angry state she realized she didn't want to get expelled and lose the love of her life in the same night. "You know I don't! I told you, it's… Hard for me! But you don't seem to understand that!"

Weiss glared at her through red eyes. She wanted to lie down, that's all she wanted. Just to lie down. But she couldn't, she wouldn't. She didn't even want to move a muscle, because the look Blake was giving her right now, it was so… familiar.

Didn't she deserve a break from this? Didn't she deserve a place to be free from this? All the screaming, and fighting, and crying, and oh god, please, just don't hit me, she thought.

Weiss tensed up as Blake moved towards her, her entire body going stiff and rigid as if she had expected Blake to slap her, pull her hair, or call her something spiteful and hateful. She deserved it all, didn't she? She had looked at another girl apparently. If she wasn't even conscious of the fact that she did, she must really, really deserve it.

All those terrible, demeaning names she had been called in her life finally started to make sense in her head. Maybe she was filthy, maybe she was perverted, or messed up, or stuck up, and a bitch. Maybe she was. She must have been lucky to even get someone as amazing as Blake Belladonna in her life, and now all because she never grew the hell up she had to suffer the consequences.

But those consequences seemed to be taking far too long. She let out a whimper in fear as she felt Blake make contact. But… it wasn't what she was expecting at all. Instead of a hard slap, or something she deserved, it was… gentle. Blake had put her fingers under her chin. She slowly opened her eyes to meet Blake's.

She was crying.

"Weiss, I…"

"No, just… stop talking."

Silence.

Blake opened her mouth, and then promptly closed it as she realized that Weiss being more serious than ever right now.

"You…" started Weiss. Have to trust me. I didn't look at her. I don't look at anyone. I only have eyes for you. I don't know how many times I've promised you that since we got together," she sobbed. "But I bet it's a lot. You never believed me when I said it. You probably never believed anything I've ever said, have you?"

Blake just looked down at her feet, unable to respond in a way that wouldn't make it seem like she was incriminating herself. "I believe you most of the time. But sometimes I can't help myself. A part of me still feels like all Schnee's are liars."

Weiss' teeth were straining at this point as she clenched them so hard her jaw started to hurt. "I understand," she said through grit teeth. "I'd be lying if I said I didn't still sometimes think bad things about someone strictly because they're a faunus. But, at least I trusted you, and never doubted you, and never, ever even dared think you would do me wrong."

Weiss knew that that didn't make her a non-prejudiced person, she wasn't stating that to make it seem like she was perfect, and Blake was aware of that. She was stating it because it was the truth. She never distrusted her. In fact, quite the opposite. Weiss had given herself to Blake completely, that included her trust.

And she had broken that trust today because of one fucking look from a stranger.

"Weiss, I'm so-"

"Just shut up! No amount of sorry is going to fix this. You knew that the instant you laid your hands on me. Just… please, shut up." Weiss' hands clung together tightly, shaking in fear that Blake would turn back again at her raising her voice.

Weiss walked away, turning her back on Blake for the first time since this started. She slowly sat down on her bed, sending a glance over to Blake with apprehension in her expression.

"I hope I didn't… ruin everything. Or lose you..." Blake said, turning to leave the dorm. As soon as the door closed, Weiss laid down and covered herself with her blankets, clutching them to herself tightly, remembering the feel of Blake's hands forcibly removing her hands from her ears.

She began to cry.