Dear Imback

Too much, too quick, too deep is probably why you maybe feeling overwhelmed and lost.

On the surface it appears that you are both  maybe co-dependant & clingy.

I guess you do need to set boundaries, like you can spend at least one or two times a week with your friends and not have that time interrupted by intrusive texts. Hopefully she would use that free time to connect with friends or do something that she finds interesting & enjoyable.

There  are books on the subject of having a relationship with someone with BPD which may help you decide whether you want to stay with her & if so how to cope.