Dry spell?

I've been casually seeing this guy(not exclusive) for a few months and we stopped having sex(it's been 26 days) but we're living together part time. We still talk every day, send sweet mesages, pda, etc. I feel our connection emotionally but not physically without sex.

I finally asked him about it. He said he's been tired and stuff and not in the mood and says he's not sleeping with anyone else. I saw a POF notification on his phone the other day but in all honesty, I'm on their too. It's always innocent flirting in chat that never goes anywhere. His time is accounted for, when he calls, I can hear people or places that match what he says. I've even gone to places he says he's going to and he's there.

So maybe it is just a dry spell? Has anyone else been through this before?