As much as the previous episode "The Benefactor" bored me, "Three Sundays" charmed me with its interesting and charming storylines. It had a feeling to it that much resembled that of the first season and that's what drew me in into this show in the first place. The concept of showing us three adjacent sundays of the character's lives was a nice one, especially since it made room to speed things up a bit and made us witness some kind of development going on.
Don's family struggles were handled better this time as they gained new depth by showing how their children fit in all this. Betty now knows a little piece of Don's past as well and I think that's only the start of what's going to find out later. I loved the end scene where the priest gave Betty an easter egg "for the little one". Nice touch.