Head empty just the moment in 'Thrawn Alliances' after Thrawn made a rope out of his clothes which heavily implies that he's chilling out there, shirtless (what a sight for our sore eyes) and then he suggests that Anakin distracts the guards and he and Padmé get Ani's lightsaber just to have Anakins inner monologue of how much he hates that idea. Pretty normal so far but let's look into that:
At this point in the story we can assume that Anakin trusts Thrawn to a certain extent. Besides truting Padmé regardless. So what was he getting so upset about? My personal thought: Anakin is known to be very jealous, possesive even. So he (subconsciously) acknowledged that Thrawn is kind of beyond 'conventionally attractive'. Dude had to navigate his worries about his wife and his bi panic acting up.
Who can blame him though?
Best part about all of this will forever be Thrawn being oblivious af towards this. AroAce coded King.