There is no quicker way to chase someone off than to be too clingy and needy.
"I know she's hurt and angered that I keep being insecure." More likely it's the invasion of her privacy! Spying on her is just as indicative of control issues as insecurity.
Take some time off to discover how to become confident in your own right. Not easy...it's a lifetime quest. But you've probably heard "if you love someone, let them go". If it's meant to be, you'll come back together with -hopefully- a stronger sense of self and REAL love and caring. Good luck.