Jarvis had no particular delusions about his purpose here, with Tony. He'd known what he was meant to be the minute he was delivered to the other man, wedged into the household staff with all the subtlety of poisoning a glass and then holding it out with a smile for someone to drink. He was a reminder. A burden. A promise (threat) waiting to be carried out at the first sign of trouble... and no one needed to impress those things on a dead man. If Tony died, Jarvis wouldn't be very far behind.
That had never bothered him. Frankly, without Tony, he had no reason to bother living anyway. Fatalistic as it was to say, and probably more than a little depressing, his whole purpose in life was to do whatever he could to make Tony's life easier. At first that had been staying the hell out of his way, lurking in with the rest of the staff and avoiding contact if at all possible. As the others left, most of the household tasks fell to him, and interaction became inevitable, and at some point the line had been crossed from servant to quiet, unobtrusive support, to confidante, to friend, to something like family in this weird, dysfunctional way they'd carved out of treason and fear and loneliness.
It was sad testament when the only motivation he could cling to was there's nothing left to lose. Tony was right in that. Things weren't so bad yet that there was no other option but suicide, which was exactly what it looked like on the outside- standing up to Stane, to the Capitol, to the status quo and the social hierarchy and the way everything had been for generations enough that no one living could remember different anyway. He frowned, still watching the other man, still measuring. Ground was being won here, however grudgingly. Now Jarvis had to stick with it, though he wanted to concede with this little victory and leave off any more discussion that made Tony look at him like that. "I think that there's potential," he murmured, the artificial modulation of his voice dropping to something low. Weary. "But I think we're going to have to stack the odds to have a shot. Rogers is part of that."
As far as reminders went, it was hardly subtle. Jarvis could usually do better. But he arched a brow nonetheless, waiting for Tony to get back around to the matter of at least talking to his fellow victor.