 In the episode "Gargamel's Sweetheart", he does fall in love with Evelyn, a glamorous but evil witch whom he tries unsuccessfully to impress with his 
claims of being a rich, powerful wizard, but he does catch her interest when he also claims of knowing how to turn lead into gold, and gets her to agree to help him catch the Smurfs to do so.Their efforts go unrewarded thanks partly to his bungling, and she drops both her pretense and Gargamel like a hot potato.