she's jealous cos she cares, and as stereotypical as it sounds girls get like that at times...talk to her and get her to explain why she feels a certain way, communication is everything in a relationship and I hope you stay happy with your dream girl buddy, sounds like you got a keeper
shes jealous cuz shes insecure
ppl who care dont act like that. if u truly care (love) some1 u want that individual to be happy no matter wat the cost (even if that means not being w u)