Clark watches her sleeping in MJD. But as far as I know he never flew in their bedroom window at night in S4.
Lois gets into bed w/Clark at the end of FTASV.
Flying in the window at night... with her with short hair... yeah I'm blanking there. I can't recall him ever, like, coming to the window and watching her. Seems like every time he came to the window as Superman he made his presence known. There's Metallo, The Source, CoM, WOS, WWW, to name a few where he pops in her window. The faux Superman comes in, in Vatman, but I doubt you want that.
