OK. This is getting even worse. OP, I am surprised at your upbeat, believing update.
I sometimes join my partner for a quick drink when he's out with his male friends, who all have wives and children. Sometimes the wives join them too, sometimes they can't make it. All are decent family men.
Let's say my partner and I spend the evening with one of these friend, who has a partner and children at home and has come out with us. And we have met you before. We have drinks. First, I can assure you we will talk about how's life, how you and the kids are etc. We will pass on our hellos to you. We'll say what a shame you couldn't have joined him and you're at home with the kids. Maybe next time etc.
As it gets later, we'd say to your partner, isn't it about time he's getting home? That's what family men (and women) do. We check he calls you, we are standing nearby when he does. We'd then make sure he goes straight home to you when he comes off the phone. We care about his welfare, and that of his wife waiting at home.
If - by any stretch of the imagination (we'd never do this) - we agree to him coming back to ours instead after he's told you he is coming home to you, we'd make sure he phones you to tell you of his change of plans. His phone would not have gone dead in the seconds he came off the phone to you, and us telling him to call you.
If he didn't call you, we'd take his phone and we'd call you.
If he was ill at ours, and his phone had miraculously died, we'd order a taxi and deliver him home.
If he was ill at ours, and his phone had miraculously died, and he wasn't able to get in a taxi, we'd email you. We'd jump in a taxi and my partner would come round to your house to tell you in person he is safe, he's ill, he's staying the night, his phone and died, and he'd collect the charger from your house so he can call you. He'd take your phone number so we can update you.
If- by another completely unrealistic stretch of the imagination - the next day he is still ill and now STILL has not told you where he is, we would jump in a car and deliver him home to you.
There is nothing about his story which is true OP.