I would probably ask him about them when your alone with him, such as: "What happened to your arm" and just see how he reacts. He, of course, may have some good excuse already planned, but he might open up to you. You never know.
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Bipolar I, Depression, GAD Meds: Zoloft, Zyprexa, Ritalin
"Each morning we are born again. What we do today is what matters most." -Buddha
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