Advice please

Hi. So I need opinions please. My bf has had his phone off all day long. Didn’t turn it on once. He also didn’t feel good either. Slept all day.

Well a couple weeks or so ago this girl messaged me and asked me where he was on July 19. I said with his friends. She told me he was in bed with her and couldn’t get it up. So she was complaining to me about that. Well today she messaged me again while his phone had been off for like 24 hrs saying suppp.

Like we ain’t friends. I just find it weird that she messaged me…she never messages me. So I asked her if they been talking and she says “not even once” so her messaging me was for? I didn’t ask her, I already have a gut instinct on them talking. He denies it and so does she but isn’t that strange?