Well, for one thing Shelley said he didn't go outside until 12:15. Also, why would Shelley "flirt" with Sarah Stanton?
Are you serious??.... Do you think that Lovelady was lying when he casually recalled that when he returned to the first floor after buying his coke, he saw Bill Shelley and Sarah Stanton talking at the front door of the TSBD. I can't imagine why Lovelady would want to lie about something so mundane. And.... What man doesn't enjoy flirting with a pretty, young lady?