What to do if my best girl friend loves my best guy friend?

Ok we will call her G and him B ok? Ok, so about 1 year ago G&B broke up i thought it was just cause whatever. Well about 4 months later G told me they had sex i just looked over it and was still both of their friends. Not thinking anything me and B started to hang out more well recently we've been hugging and just really cuddly lately. Well G noticed this and told me to back off and that i was leading him on and that i needed to stop cause she still loved him. I told her i was sorry and don't mean to lead him on not wanting to go on i ended there. You see i have a feeling B likes me, well i like him. So it's hard not to accept the hugs and cuddles he always gives to me. And whatever i do i CAN'T tell G that i like him it would just kill her. How can i like him (and maybe be with him) with out making G Hate me?