Dick didn't need to thank him, not for that. Richie got it, was all. And he wasn't always so self focused where he didn't want happiness for other people. Hell, he wanted that a lot of the time and not just only in his little circle of seven (even if there were currently only three of them around).
He took a deep breath when Dick told him to, but it burst out of him a second later and Richie really did need to get his shit together. He couldn't keep up with himself and his nerves some days and it really was a bad look to go around having fits of panic and throwing up every time things for a little rough. So he took another breath and then calmed himself slightly -- not completely, because it probably wasn't possible. But enough to focus up a bit. "Okay. Okay," he said slow, and pushed his glasses up his nose a bit when he went back to looking at the rings.
He could do this. Ideally, he'd have a little more time, a bit more in terms of viewing options, but he considered himself lucky he'd ended up here and not in some hellscape so -- he wasn't going to push his luck. Bands. Something with some flare but not too much.
Enough looking, and he'd narrowed it down pretty significantly, asking the salesperson, who had finally come to accost them, to show them to him up close. "Do you even really need to propose when you spend half your time bitching about who gets whose last name?" He wondered. Of course he still was going to, but it wasn't going to be much of a surprise, all things considered.