Callaway x14,16,18,fusion--- Mizuno mx23---Adams hybrid set---Hogan hybrid set----I would not start with a driver. get a 3 wood. Cleveland launcher is good for one. A
sand wedge 56 degree clev or titleist and a putter 2ball putters are popular I wouldnt pay more than $50 for a putter as you will be getting a new one as you get more proficient. Also i would lean towards the hybrid sets for beginner as they are much more forgiving. Golf lessons for a birthday present and driving range for a date. This will set up your hobby and social life for a while.

Good beginner golf balls at about $0.75 per ball new or a good used ball on ebay Maxfli noodles or Titleist NXT at about $0.50 per ball with no nicks.
happy golf and hope you and boyfriend enjoy golf and life.
by the way since you are looking for left handed clubs your selection on ebay will be more limited but the price should be cheaper.