Sleeping late suddenly?

Me and my boyfriend usually talk before bed and lastnight he didn’t call or text me and he woke up late this morning for work. I thought maybe he went to bed late because he woke up late but he claimed he went to bed early. We got in an an argument over it and he didn’t call me tonight either. He also text me good morning at a later time. Does it sound like he’s talking with someone else late at night or am I overthinking?
Sleeping late suddenly?
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