We recently started seeing each other again and she made a "joke" about having a guy on standby in case things didn't work out again, so she wouldn't have to be single. At the time, she didn't mention it was a joke. She didn't say it was a joke until a few hours later.
She offered to let me look through her Facebook messages, texts, etc to prove she wasn't actually setting up some stand-by-guy. Should everything be alright? Should I let this go or am I rightly upset about this?