I kinda figure Dick has a date and plans to get laid afterwards and is all braggy about it to Tim, while being utterly touchy feely.
In such a good mood he’s telling Tim how great he is and what an adorable little brother he has.
While Tim’s all ‘Not great enough’/’yeahhhhh, that’s exactly what I want to be - your brother /sarcasm’ in his head of course, becase Tim is the master of repression and god forbid he come in the way of something that makes Dick happy.
Dick leaves after the date and decides to come back to Tim’s rather than the manor simply because of proximity and shuffles his way into Tim’s bed, reaking of sex and Tim’s too busy repressing to tell him to GTFO.
At best he manages ‘you stink, go shower’
‘But it’s 4am, Timmy, I’m tired, and cold - cuddle meeee’
Dick continues to obliviously break Tim’s heart until, Babs or Alf or someone takes a metaphorical newspaper and beats him upside the head with it.
And tells him to either back off from Tim, apologise, or try.
I dunno, ideas and what not~