A red bottom birthday surprise

Sofie awoke when her boyfriend Erik opened the curtains and let sunlight into the room. A quick look at her alarm clock told her it was already ten thirty. Still, she did not want to get up. “Let me sleep.” She mumbled.
“Out of bed, lazy.” He responded, pulling away her blankets. “I made breakfast.”
Sofie looked up at her man, he was fully dressed. With the blankets gone, she turned over – hiding her own nakedness – and refused to look at him. “It’s my birthday, I can sleep a bit longer if I want to.”
She felt the bed drop as Erik sat down next to her, his hand stroking her bottom – she could not hide everything. “Is that so? I was planning to do this later today, but perhaps I should give you your birthday spanking now, to help you get up.”
Sofie could almost imagine the smile on his face. Spanking was one of Erik’s favourite sexual fantasies, and after introducing her to it, she had spent many of her most exciting moments across his knee. Truth be told she had looked forward to her birthday spanking too, and if she got one now, she might get two today. Playfully wriggling her bottom away from his hand she said: “No, let me sleep please.”
His hand quickly grabbed her bottom again, holding it more firmly. “Last chance young lady!”
Sofie blushed, the first time he had called her that, it had sounded awkward and silly, but now it made her stomach clench and her inner thighs heat up. “I can’t hear you, I’m sleeping.” She said.

Erik grabbed her legs and pulled her aside until only her upper body was still on the bed. She didn’t struggle, but she knew that even if she would, he’d be too strong for her. With her next to him now, he lifted her legs and pulled her back on the bed, now laying across his legs. When she looked at him, he had that look in his face, the one she was never sure of whether he was really angry or just playing. Of course Erik had never spanked her out of real anger, but she had had dreams, perhaps someday she could tell him about those.
With a sudden smack his hand landed across her bottom. Sofie moaned and pushed it up, that sound was so sexy and the sting, spreading across her cheek made her want more. Erik’s hand quickly smacked her other cheek, spreading the sting even more, the sound echoed in the room. “Did you forget how a birthday spanking works?” He asked.
Sofie blushed, she had forgotten. “Two!” She quickly said.
“Oh no, if I have to remind you,they don’t count.” Erik replied and smacked her bottom again.
“That’s not fair!” Sofie said. But quickly finished her sentence with: “one”.