This is an extra part for my imagine Two Months.
Pairing: Derek x Reader
Summary: Derek wants to spend more time with (Y/N), he wants to get to know her biggest and darkest secrets but with (Y/N) refusing to be in a public relationship; he has to deal with that. (Y/N) only wanted a one night, maybe two night, stand.
Word Count: 989
A/N: There is smut, you have been warned.
“Happy Birthday to you, Happy Birthday to you, Happy Birthday to (Y/N), Happy Birthday to you.” The gang sang around the kitchen of your house, you couldn’t stop blushing staring at each one of them smiling broadly at you. “Make a wish,” Lydia squealed, shoving the cake closer to your face. You caught the dark eyes of the werewolf through the candle’s fire; you smirked at him before blowing the candles out – not breaking eye contact with Derek who shifted awkwardly in his chair.
Scott switched the lights back on and patted you on the back. “Congrats for making it to 18.” You thanked him silently with a smile and stood up from being centre of attention. “Now cut that cake so I can eat it,” You teased, flattening your short black dress more and taking a sip of the alcohol in your red cup. It wasn’t a massive party that you were having; you only wanted your closest and dearest friends to come and celebrate with you. You were confused when Derek walked in with Scott at the start of the night, the pair of you weren’t close; of course, excluding the night that you spent with him in his loft. Other than then, you would only exchange small talk and smirks from across the one.
No one in the gang has figured out what happened between you and him, you were sure to keep it that way. Lydia cut the cake; ten slices for the eight guests that were here. You thanked her for the slice and wandered off to the living room where Stiles and Isaac were sitting playing video games. Derek’s gaze was transfixed on you as you wandered around the kitchen and then to the living room; talking and smiling at everyone you passed. Derek never noticed how kind and down-to-earth you were until he had you wrapped up in the sheets breathing heavily.
When he first met you, he didn’t think much of you. You were pretty but he had no intention due to the age gap. You kept him on his toes; he was walking around eggshells with you, but once that night happened, all walls collapsed and he wanted to get to know you and be with you more – preferably alone.
You waved goodbye to Lydia who was the final person to leave your house at around midnight. You shut the door and took a deep breath realizing that you were home alone. Your parents booked a night out of town so that you and your friends could have the house all to yourselves without parents butting in to the conversations. Walking to the kitchen, you near jumped out of your skin when you say a tall, handsome man with a trash bag in his hand cleaning up after the party.
“Derek, what are you still doing here? Other than trying to give me a heart attack.” You chuckled, picking up the other black bag and stuffing the nine pizza boxes in it. He mumbled an excuse causing you to roll your eyes and continued cleaning. The silence between you two wasn’t awkward, it was relaxing and it put you at ease knowing you weren’t alone.
“You’re something,” He mused, turning to face you in the chair that he sat in now. You looked at him with a raised eyebrow, “I mean, I never thought that I’d start falling for a younger girl – that was until you convinced me otherwise.” You looked at him with wide eyes, he was falling for you? You didn’t want that to happen. You wanted a one night, maybe two night, stand and leave it at that. “Derek,” You muttered when he started towards you, “I didn’t want, I don’t want a relationship.” You pointed out to him, gasping when he placed his lips straight onto your sweet spot.
He nibbled the spot – sucking, and licking, “Who said that I
wanted a relationship?” You rested your head against the fridge, giving him more access to your neck. He kissed down your collarbone and towards your breast which the dress made look amazing. You felt his hand slide down your side, to the hem of your dress and slipping under it. His finger slipped under your panties and he rubbed his finger along your clit, feeling how wet he was making you with simple kisses and suspense.
You let out a moan as his fingers moved in circular motions until they reached the entrance. You bit his neck when you felt one finger enter you, pumping slowly until his middle finger joined in. He started to pump faster, your insides tightening with each movement, “That’s only two fingers.” He whispered into your ear, licking your earlobe. “Will I add another?” You nodded eagerly, his eyes darkening, “Beg.” He demanded causing you to moan at how sexy he sounded.
“P-Please Derek,” You bit your bottom lip, trying to sustain the scream that was trying to escape when he entered the third finger. “Scream for me, princess.” He hissed in your ear, he stepped closer to you and you felt his bulge rub against your thigh. Derek started pumping faster, the veins in his arms popping out and you felt yourself coming to your high. “Cum for me, (Y/N).” You let out a scream as he surprised you with one more finger and you felt yourself coming to your release. You moaned as you came down from the high, and he slowly slipped his fingers out of part.
He looked you in the eye as he sucked on each finger individually. “I don’t want a relationship, but I do…” He started, placing his hands on your waist, “I do want to do this more.” He whispered, placing a sweet kiss on your lip.
You looked at him, amused, “You didn’t want to do this two months ago.” You teased which made him shrug, “Seeing you naked changed my mind.”