Who is the first character to realise that Eric is the father of Eva Smith’s baby in An Inspector Calls?

I think Eric

is that lennie, a man with a mental disability, is treated poorly due to his mental disability

- "the die is cast; i have consented to return if we are not destroyed. thus are my hopes blasted by cowardice and indecision; i come back ignorant and disappointed. it requires more philosophy than i possess to bear this injustice with patience. i have lost my hopes of utility and glory; i have lost my friend."