"I cannot speak for your kith and your kith's natures; I am Sidhe, and know only that from my own experience. Thus speaks the Empiricist." Some small, bitter, humor there? "But based on that...."
He stops and struggles for words, and perhaps composure. "You can be nothing but who you are, honestly, plainly, and clearly. Never give an inch on that. Tell him who you are, and what you want. Make your boundaries clear. Draw the line. If he cannot, in honestly, meet you there.... it is best you both know soonest, and part in ....." He swallows. "... in good company. There may be pain but... it is pain best gone through, and not delayed. If you care for him, best he is happy; with, or without, you."