true Fredek, you make a good point.
first off, 'green magic' from what i was taught is a more practical form where you incorporate magic into you everyday life. [like while making soup you say a healing spell] 'stay out of the desert' the person could be trying to sound deep and insightful, or they could mean you should wander in your life's pursuit or you'll be lost.
if you have a picture of him and of you, you can always do spells yourself. you just need a strong will and focus. materials don't really matter too too much. a lot of things for love spells are actually really easy to find [a lot can be found in the spice section of your grocery store] don't know your situation, or why you want to cast a love spell, but i'd cast another one yourself to be safe. then when you feel right, say the activation phrase.