You and Aro have been seeing each other for quite some time, and you made it official. With you now his eternal partner, you lived with him in Volterra.
When he wasn't overseeing executions and giving orders to the Volturi Guard, the mansion gave you some time to yourselves. And you cherished every moment you shared together.
Since you and the vampire were a couple, your love language was quality time, while his were gentle physical touch and words of affirmation. There were others too, but those were the main ones.
One day while he was enjoying some time he had to himself, you (because you were feeling a little lonely/needy - take your pick) came up behind him and wrapped your arms around him, enveloping him in a gentle embrace.
He was a little taken aback by the sudden gesture, but his undead heart fluttered nonetheless. "Are you alright, my dear?" He asked in a soft, gentle tone that was reserved for you and you alone. "Is something wrong?"