Am I crazy or is she flirting? UPDATE

UPDATE: My bf told her I don’t appreciate her subtle flirting and her posting about him and she said she was sorry, she wasn’t thinking, and knows how it feels to be me in this kind of situation and that she won’t do it again. I still don’t like her, kinda don’t believe she will stop but I guess we’ll see. A huge thank you to everyone who commented and gave advice!

Title says all. My boyfriend works at a car dealership and his female coworker always flirted with him & he wouldn’t put a stop to it and wouldn’t let me but, tonight I’ve had it. I just want to know if I’m crazy before I have my bf tell her off or if she’s actually flirting?

(Green is the female coworker, blue is my boyfriend, random colors are random people who commented)