Yes sounds like you got yourself a Single White Female situation here. Proceed with caution! Histrionic.. in big flashing lights!!! I don't know.. I've met some needy people in my day..heck I'm sure I can come across as weird awkward needy and annoying sometimes...and I am dxd with borderline pd...but I have never fixated on anyone that I barely knew at the time. I can get pretty needy and attention seeking when I perceive I am being abandoned..but not towards acquaintances or co-workers or well anyone!..really except for a few instances in my marriage... yeah I really can not find a way to relate to the girl your talking abouts insane feats of boundary crossings! I always try to think that in general people who are attention seeking are really just lonely sad and trying to connect find a friend...but then there are stories like yours...that goes way beyond social awkwardness self esteem issues and loneliness...
This is straight up..get a restraining order, new job, move across the country if possible, shutdown all email phone #s and so I also media accounts go into witness protection kinda territory! I don't know..I would just Run!
But on a nicer trying to maintain peace and boundaries level of talk here..Talk to your roomate. What is he like personality wise? I mean he's dating her moving stuff to her place..sounds like it's going ok...so what's his deal? Maybe she isn't really crazy??..maybe she really just wants to be your friend and is completely clueless when it comes to how to go about this..so she's trying all this random stuff to engage in conversation...and hopefully she didn't actually frame and hang your wedding invite in her home...maybe she just an over the top attempt to compliment you??...Or it has some other significance to her such as the event she met your roommate at? ...or the day she got in a fight in a parking lot and decided to finally leave her abusive ex??.. I'm just grasping at straws here obviously. Cuz...Me i got a whole barrel of crazy monkeys up in my head...and I certainly know how to make myself look like an idiot in public, social anxieties awkwardness you betcha!...but either you are misinterpreting her behaviour as directed solely at you and because she annoys you in general you are maybe taking her out of context???...or B***H BE KaRazy!...in which case run! run far far away! But I am curious about your roomate..if she is really that nuts would he be with her? Moving in to her place?..u tell me cuz I don't know him....
One last possibility...maybe she is nuts, but maybe she is also confused...maybe she has romantic feelings towards you and hasn't ever felt attracted to another woman before and just doesn't know how to act??..or because she has never felt like that before maybe she says and acts like this then as soon as she walks away she's baffled and beating herself up for not understanding why she gets awkward chokes up and blurts out nonsense??..I really have no clue...just some thoughts...but honestly if she makes you really uncomfortable and continues this stalker like behaviour..Please Please Be Very Careful! She could be dangerous or violent..and trying to define your boundaries with someone like that can in fact cause them to snap and things could get ugly and dangerous..I really don't like to believe that people are really like that...especially since I have suffered my whole life with many mental health issues..and some bizarre stuff at that..but, I hate the thought that I might be perpetuating the stigma of those living with mental illness to be dangerous. Because I know I'm not and I don't think I met too many that truly are..we are mostly harmless...just odd and off putting to some..so just tread carefully, talk to your roomate, and trust your instincts
Hope my drifting round in circles mess of a brain helped you in some fashion?...
-LITW