usual disclaimers apply :P

"Son of Stark!"

Thor's voice echoed through the halls and Tony cringed. If Loki didn't already have a bitch of a headache, he would now. He'd made the walls almost completely soundproof, but he hadn't really thought to make them THOR-proof.

"I tire of your evasion. I wish to speak with you about my brother."

Tony grimaced. This was SO not the time for Thor to confront him about this!
"Look, big guy, I know i've been avoiding that, and I know it's something i'll eventually have to face up to, and if you want to throw me through a window or something when we do, well that's just great, i'll get the mach 8 ready for a fast summoning as i hurtle to my death, but right now I have to find Bruce so your brother doesn't die of a cold, okay buddy?"

Thor's booming voice echoed through the hallowed halls once again, only this time in a hearty chuckle. Personally Tony couldn't see what was so funny, and he waited impatiently for Thor to realize the seriousness of the situation and MOVE OUT OF THE WAY.

"Son of Stark you are so very witty. Like i would kill y-"

It dawned on his face, and Tony watched as it twisted from amused to anxious.

"Loki has worsened? We must find Banner immediately!"

With that he strode off towards the kitchen, roaring for Bruce to make himself known. Tony resisted the urge to roll his eyes because really, it took Thor waaaay too long sometimes to hear what you were saying to him.

When Bruce had been located and essentially dragged from his lab by Thor (which is where Tony had said he would be, but would Thor listen to him? No. Stupid Asgardian Princes),
the first thing that had been done was moving Loki to the medical suite. It had taken all of Tony and Steve's strength, and probably most of Thor's to restrain Loki, who by now was hurling items at the Bruce teddy as he bawled (seriously, tears on his face) about how it was going to smash him into the floor, and how "he wasn't a puny god" which to be honest, Tony didn't want to know the story behind.

Upon arrival at the medical suite, Loki had been unceremoniously dumped into a massive bath of ice, which only led to an increase in his tear output as he cried that he was cold and just wanted to go to sleep with Brucey bear (which the real Bruce had been quite flustered by until it was explained to him).

Tony's heart ached for Loki, he knew the chills were unpleasant, and so he spent nigh on an hour sitting on a hard stool next to the bath, Loki's hand wrapped in his own, murmuring soft assurances and insisting the bath would definitely help Loki feel better. The other avengers were looking at Tony as if he had grown another arm and three heads, but in that moment, he didn't care. The anguish in Loki's eyes made his heart bleed, and his love was all that mattered to him.

Eventually, Loki drifted to sleep, and everyone except Thor (including Tony, much to his indignation) had left while he lifted Loki out of the bath and changed him into dry clothes before tucking him into bed. Since being allowed to return to the medical suite, Tony had sat in silent vigil next to his beautiful prince (and yes, he would totally love to call Loki that in the bedroom, but now wasn't exactly the time) and gently stroked his ebony hair, brushing stray hairs from his face, and then gently caressing his scalp.

"You care very much for my brother"

Tony started, having not realized Thor was still present in the room, but thankfully Loki did not stir.

"I do. I didn't realize i cared for him as much as I did until earlier today. I could hardly bear seeing him so ill and in pain."

Tony knew this was probably the most sentimental thing he had ever said, but still found he meant every word he spoke.

"Loki needs someone who loves him as you do. He knows I care for him, but it is not the same. He does not relax in my presence as I have seen him do in yours. You give him peace. And thus I give you my blessing."

Tony said nothing for a few moments, stunned that it had been that easy. Then he realized that Thor was looking at him, waiting for a response.

"Thanks, big guy."

Thor turned to leave the room. However, as he reached the doorway, and the doors slid open to allow his departure, he spoke.

"If you hurt him, even the Allfather will not be able to save you. Mjolnir responds to me and me alone. Remember that"

And then he was gone.

Before you all yell at me, i dont know, the all father may be able to wield Mjolnir, but when making a threat, Thor wouldn;t mention that because hey what Tony doesnt know wont hurt Loki. I hope this was good enough for you! please review while i go get some sleep!