My gf and our secrets. this is damaging :( please help me..?

she doesnt know i have account bcos she thing i dont know she has one. she talks about of this account saying im a bad kisser and stuff like that. and she wrote questions about me, and she gave a "best answer" to one saying move from this crap relationship. should i end it ? bcs we have plenty of fights and we fix them in matter of hours but still. ..