I cheated and still haven't told whole truth

Hi,

First bear in mind me and my gf are only 17 and i now love her very much and we usually get on perfectly, both virgins and she's not particularly sexual.
I cheated on my gf not sex, just more than i'd done with her with another girl. I just told her that we kissed, because i felt that i couldn't not tell her. However we actually did midly more than that. We broke up and then after a while she forgave me. Should i tell her what actually happened or leave it as it is? the other girl says she can't remember what happened so no chance of her telling my gf.

Thanks

You shouldn't tell her. But I also don't think you can keep your dick in your pants.

no need to tell you GF more. she accepted you back with your lie. but, also agree that i doubt you'd stay faithful to your GF.

not a good situation anyway: you lie, but she still wants you.

good luck to you two.