When a squeaky-clean Disney idol is photographed without his purity ring, eyebrows are sure to be raised. And foreheads sure are crinkling over at Life & Style, which is delving into the mystery of Joe Jonas' seemingly missing band (as he explained in 2008, the silver ring, decorated with a cross, is a promise he and his brothers made "to ourselves and to God that we'll stay pure till marriage"). Far as we can tell, the middle JoBro last sported the ring in June, not long before he was linked to Ashley Greene. The pair has been snapped strolling in Los Angeles and puckering up in New York (at left, with Joe sans ring), and the starlet recently cheered him on during a few charity softball games. "When they're not traveling," a source asserts to L&S, "they're basically living together." The words you're searching for here: uh-huh. Anyhoodie, when we contacted Joe's rep for comment, he told us, "I don't comment on any client's personal life." Besides, there's always the possibility that the bauble is in for repairs. It was already falling apart in 2008, but Joe said he "didn't want to get a new one, because this one means so much to me."