Moonchild Deluxe (50% off, $7.49) and Girlfriend Rescue (30% off, $3.49)

To get the discount on the Deluxe version (notably contains the Official Guide as well as super duper wallpapers and a bonus savefile), make sure to "Add to cart" this version, not the "normal" one:

http://store.steampowered.com/app/332410/

As for GR:

http://store.steampowered.com/app/332400/

Have fun!