I'm not expecting, nor wanting them to be so unconcerned about the other person there is no shyness, but it kills me he is so nervous around his wife all the damn time, to the point hugging his wife takes effort. And someone he played nature with to make a baby just furthermore exaggerates that.
I still like it, but after the original and 142 chapters of the sequel with them as a married couple, it's getting ridiculous and lost most of its charm to me.