[Carefully closes the box and sets it down again next to him now while Shiro talks, just so it doesn't get squished when he touches his face and leans up to kiss him first. You got him all in his feelings now, with this and those words and all.]
Hey, this is nice. I love it - and I love you. [Tbh you didn't have to get him anything in the first place as far as Keith is concerned, so the sentiment alone is enough already. He doesn't insist as much simply in that the first time of everything now is important to him too, after all.]