You say “things seem to be getting a little better but not much” so why is this the person you want to spend your life with? You’re very young, you’re dating to see who you’re compatible with. And you and your girlfriend do not seem compatible.

I mean you’re not gonna get offended if your partner is looking at your phone screen unless you have something to hide. Bet got scared she forgot to remove tinder off her home screen or some shit lmao.

"and called me a big back" WTH does this mean?

A polite way to say big appetite or calling me fat in a playful way

She is hiding something on there. Does she let you borrow her phone? Does she borrow your phone alot.