I don't get it. Did you just wake up one day and genuinely turn straight (unlikely), or are you still queer and now that you've lied (which is your own business), so whether it is for ***** and giggles or to prove a point or prank everyone, perhaps even simply out of your own curiosity, you'd be willing to mislead and lie to a girl, making her believe that you have feelings for her, only for you to ultimately break her heart? I really hope that it's either the former or the girl involved actually knows that you are unsure and experimenting with your sexuality, otherwise, I don't see it working out. Are you really straight? Ask yourself first before trying to involve other people. I know this might sound harsh, and I am really sorry if it does, but I hate when people disregard other people's feelings for the sake of their self-discovery.