'Unlikely' yeah okay Istredd, who are you fooling.

"I don't know, you're pretty stubborn, and I'm very blind," he says, which really in an accurate summation of what happened. Lucifer would not have noticed on his own even if Istredd hadn't been hiding his thoughts because he wouldn't be able to recognize what the hell to do with it all and still assumed cross-wires for whatever bullshit reason he could come up with.

Because that initial thought of no one ever chooses him would still be a blaring alarm and Istredd is kind.