He was nervous. Prom was almost a month away, and he still didn't do it. He knew his time is limited, and at any moment some idiot could steal his chance of asking you out.
You and Tim have been friends forever, and he didn't even know when he started having the biggest crush on you. He was so scared of how you'll react, if you stop being his friend, stop talking to him, what will he do? He trusted you with everything, even told you about being Robin. You were like a safe, warm place for him
But now he was walking around school with you, trying to think of a good moment to ask you out while you blabbed about some l meaningless stuff he just stared at your pretty eyes. Until you smacked his head
"Oh- sorry my mind was elsewhere, what did you say?" he rubbed the place you smacked