"Well," Ian began, hesitantly, "I can think of a test, sort of like a litmus test, which could possibly tell you if you were in love or not. Scientifically speaking, of course....." He failed to see the blush on the older man's cheeks, or the answering one on his own. "Through a kiss," he said at last. "Perhaps it would set off something chemical, you know?" A fancy explanation, indeed, but mostly it was because he wanted to kiss Alexander. Very badly.