(Now I'm not sure if some of these are the correct translation because I used google translate)
Imagine: Harry's been teaching you how to speak Italian because you had been wanting to learn. As he teaches you he loves the way you're perfecting it to where it starts to turn him on. He then turns your lesson into learning dirtier words and sweet nothing's because he loves to hear you talk dirty to him. You're on the floor making out, taking off each other's clothing. "Say.. fottimi (fuck me)." He spoke in between kisses. You do as he says, which really gets him going before he slams his dick into you. You're basically screaming his name as he pounds you making your legs shake before you're about to cum and he knows..before he says, "sborra per me piccola (cum for me baby)"
