Is it just me, or does it seem as though Don's settled down a bit and is focussing more on his increasingly independent (and more radiant) wife?

he's trying.....wonder how long he can hold out?

He has recently, if you don't include the advances of the school teacher.  The trip to Rome seemed to cheer him up quite a bit, and restore some of his faith in his relationship... however it had the opposite effect on Betty (and we know that trip was all about her anyway).  Sad really.

I think to be fair, Don may have done a little bit of leering during the maypole scene, but he hasn't really put any moves on the teacher. That was all her doing. The drunken dialing, and the weird "You philanderers are all alike" bit. She seems to think alot of herself.

As someone once said, [Don] is only as faithful as his options.