>>33644041 (OP)
You obviously don't get the love you expect from her and when she's not around you are worried a lot.
This isn't a "you" issue. Your concerns and paranoia are valid. There's no assurance no matter what people say here to comfort you.
You bring this up to your girlfriend. IF she gives you assurance to comfort you then she truly loves you like telling about her day or willingly give her account credentials just for proof or assurance enough to gain your trust. It's obvious you and your girlfriend never reached the worst scenario possible in every relationship where both will endure for the sake of love.
When shit's about to get down, your relationship and all the things you worry becomes real because those aren't fiction. If she doesn't give you any assurance to comfort your worries then she's just a bitch who doesn't care about you. Replace her for someone better if you get the chance. Your relationship is going to sink sooner or later as she doesn't care about you back.