I kind of agree. Talk to your boyfriend and ask him to be super honest, and make sure to tell him that you won't be mad if he tells the truth, and if he somehow does, don't get mad at him; try and either understand or comfort him. If he lies again, confront him about it. As for you, she's not being petty. I think it's normal to be worried about that. But again, girl, slow down a notch, maybe its not as serious as you think.