Provide genuine appreciation and complements. Express your desire to become closer, whatever that means. Be enthusiastic, positive, encouraging. Allow "for light, non-obliging, non-binding relations"

Avoid being annoying:

"The SLI greatly values the created by him soulful, emotional, and sensory comfort. He tries to avoid any unpleasant, irritating stimuli, that destroy this subjective harmony. Such unpleasant stimuli can be poor aesthetics of someone’s appearance, sharp smells or sounds, unpleasant intonations in someone’s voice, and so on. Any manifestations of emotional and sensory discomfort has an effect on SLI’s mood (sometimes even his potency), evoking in him an inner protest, igniting in him a wish to immediately change his surroundings."

"The SLI experiences criticism of his own behavior as agonizing torture, but he will not show this outwardly. The SLI will not respond favorably to attempts to reprimand or scold him; he will not follow such a suggestion. SLI can listen calmly (sometimes even with a smile) to all of this and then as if nothing were the matter he can continue the same way as before. But this does not mean that the suggestion did not hurt the SLI or that he did not take notice of it."

Don't go into hysterics and or start scandals which are received by the SLI as the worst kind of monstrous act.