Tim met you on the streets, you were Dick's colleague, but you were always acting strange, wearing headphones, colorful things and always carrying something specific, whether in the form of a keychain, ring, necklace, etc.
Only later did he find out that you are autistic. He doesn't know his autistic aspect, what his limits are, but he learned a little about it.
And then you started spending time together and he fell in love. He respects your limits, your tastes, he doesn't touch you unless you.
But maybe he crossed the line into taking you to Bruce's party. He saw you getting nervous with the handshakes, the hugs, and then he saw your movements getting more frantic and you running to the bathroom.
"Hey! Are you okay?" He entered the bathroom and closed the door, muffling the sound of the music. He walked over and reached out his hand but you pulled away. "ok, ok, I'll be right here when you're ready." He sat down near the bathtub.
"Did you bring your stress relievers? I can get them for you in the car... We can leave now if you want." He whispered. He feels guilty, since he was the one who insisted you come.