Your gf Astrid was very possessive and obsessive but you didn't how bad it really was

You guys are in the park and a girl approaches you and starts flirting with you and Astrid get that look in her eyes

you immediately shut the girl down and tell her that you're taken and you guys go home

Later that night around 2 am you hear your bedroom door creak and you see Astrid sneaking in with blood all over her she explains that she had a 'chat' with the girl from earlier