Normal for teen son to cuddle with dad?

My (46m) son (16m) and I have a good relationship I’d say. I’m certainly not “cool” but we get along fine.

About a week ago I was on the couch watching TV and he came in and sat down on the couch beside me and laid his head on my shoulder and put his arms around me and basically cuddled me.

My wife and I just looked at each other with a puzzled look and shrugged. I wasn’t going to complain though. I hugged him back and I played with his hair a bit and rubbed his back some (he was shirtless). We never said anything. After a while he got up and announced he was going to bed.

A few days later he did it again and cuddled me for a bit and then laid his head in my lap. Again I played with his hair some. I had my other arm tucked by my side for a while but that got uncomfortable so eventually I just rested it on my son’s stomach/chest (he was shirtless as usual and laying on his back). I asked how school’s going, I just got a fairly snappy “everything’s fine dad.” We didn’t say anything else.

My wife feels like something must be wrong and I should talk to him about what’s going on. I don’t deny wondering if there’s something causing this new behavior, but I’m just enjoying it while it lasts and I don’t want to “jinx” it. Feel like if I question it he will think I think it’s weird and stop. But I do hope he’s okay.

Also my wife thinks I’m being a little too touchy? She said nothing wrong with some hugging and light cuddling but playing with his hair and rubbing his back and chest is getting a little weird. I was just trying to comfort him and he doesn’t seem to mind so I think it’s fine? Also for the record I didn’t feel like I was “rubbing” his chest, my arm was just kinda resting there. She also finds it a little strange he didn’t put a shirt on.

Do I let my son be and just enjoy the moment? Ask him what’s going on? Is our level of touching appropriate?