Welcome to the Forum.
I'm curious why it would be good news that her other bf dumped her? Good for you? Or good for her?
Regardless of your own luck in finding like minded women, you may want to take some time to tackle your own emotions.
Insecurity is something you need to own and deal with. And if you aren't taking care of yourself, how can you expect to take care of her through depression?
I hope you take advantage of the support and advice offered here to find your path.