[Well Tony's hands just work their way into Loki's hair to keep him close for that kiss anyway. When they do pull away, he doesn't go far, just murmuring in response.]

I'm not your brother's biggest fan right now.

[And another kiss.]

But if that's what you want, alright... No need to be worried about what makes you... you, though.

[Not the most poetic he's ever been but he doesn't seem to have a single issue with the actual content of the message.]