In his defense, when Clark met you a few weeks ago at the local bookstore, he didn't know who you were! You never mentioned who your brother was... Well, okay, maybe that part was his fault! But hanging out with you, he started to fall in love.. and he learned today that you were Bruce Wayne sibling ! Oh, it was a funny story... Bruce was talking about his sibling and the more he talked, the more Clark noticed that what Bruce was describing resembled you... he got confirmation when Bruce mentioned your name, and after finishing his chores he headed straight to your house, and once you'd opened the door of course he asked directly "Why didn't you tell me Bruce Wayne was your brother?!"