You were heading to the lair because of an emergency signal from Mikey's phone. You hurried into the sewers and quickly made your way there. You silently crept into the lair. You looked around. Nobody was there. You were confused, but suddenly someone grabbed you from behind. You screamed in fear. You lashed out, punching them in the face. You were stunned to see Raph there.
"Oh! Sorry Raph! You should know not to scare me like that!" You said. He looked up and you froze. His eyes weren't normal. They were black. You swallowed hard. "U-um Raph? Y-you okay there?" You asked nervously. He hissed at you, gross green saliva showing in his mouth. You shrieked as he lunged at you. You kicked him backward and ran. Suddenly you were tackled by another turtle. In a flash your weapons were out and you kicked him off. You saw that it was Leo. He hissed at you and Raph hissed at you again too. You quickly ran for your life. You heard someone shouting from the lab.
"(Y/N)! IN HERE!" You turned and spotted Mikey. You quickly darted past Raph and Leo and leaped into the lab. You both slammed the lab doors shut and he locked them.
"WHAT THE HELL IS GOING ON MIKEY!?" You screamed.
"Leo was stung by a big mutant wasp and now their all brainwashed into guarding it's egg!" He said.
"That doesn't explain why Raph's acting that way and why they're after us!" You said.
"Leo bit Raph and now he's gone crazy and during a fight Leo bit Donnie! I'm trying to finish the antibody Donnie told me to make to cure them, but I'm panicking so I called you to help!" He said.
"Why are they attacking us though?" You asked.
"We need to get rid of that egg because if it hatches it'll eat the guys! We can only do that it we un-brainwash them." Mikey said.
"So why am I here again?" You asked.
"I need help!" He said. "Donnie's taught you about this stuff and I'm still freaking out!" Mikey said. You sighed.
"Okay, where do I start?" You asked. Mikey explained what Donnie had told him and you got to work. Once you finished the cure you made a plan.
"Okay, I'll get Raph and Leo if you can get Donnie." He said, giving you a needle. You nodded. You both headed out. The others weren't around. You both split up and you looked in the kitchen. Nobody was there. You walked in to make sure, but suddenly you were grabbed and pinned against the wall. You yelped. You gasped as you saw Donnie leaning over you with a grin of his face.
"Hey (Y/n). What are you doing just sneaking around?" He asked. You didn't answer. You reached for the cure. His hand shot down and grabbed your wrist. "Aha. You're trying stop us aren't you?" He said. You struggled.
"Let go of me Donatello!" You shouted. His grip tightened.
"You know (Y/n), there's a lot of different ways to spread a virus. Biting, coughing, sneezing, and do you know one of the most fun ways?" He asked. You stared at him in fear. He leaned in and whispered right in your ear. "Through kissing~" You were shocked.
"Donnie what the actual hell has gotten into you!?" You said.
"Come on, don't fight it dove~" Dove!? You were in complete shock by how he was acting.
"Donnie, I don't know why you're hitting on me, but snap out of it! This isn't you!" You said.
"Of course it's me. I'm right here aren't I?" He purred. He kept getting closer to you.
"Donatello Hamato, I swear if you lay one finger on me in the wrong place you aren't leaving here without a broken arm!" He grinned.
"Guess I gotta find the right place then~" You were shocked.
"Donnie stop it!" You snapped.
"I don't want to." He said.
"Donnie I'm warning you-" He didn't care. He leaned in and kissed you. You were shocked. No! No! No! No! No! No! NO! You thought. You shoved him back. He looked at you with a sly grin.
"Aw come on dove. You know you want to." He said.
"Yeah right!" You said. You pulled out the cure, but he was faster. He grabbed your wrist and pulled you in again. His lips met yours again and you were about to pull away, but then....the way he kissed you. It was really nice. You had fallen under his spell. You stopped struggling and he grinned. You both kissed each other. His tongue shot into your mouth and you moaned into it. Your arms wrapped around him as you gladly accepted your fate. You thought about Mikey, Leo, and Raph. I'm sorry guys. You thought. You let him infect you and once he'd gotten the virus into you he pulled away, leaving you wanting more. He chuckled at your helpless expression.
"There. You're mine now~" You were still a little dazed. "Does my girl want more?" He asked.
"Y..yes." You said. He grinned. Just as he was about to kiss you again he was kicked back. You were shocked as Mikey stepped in and protected you.
"Stay away from her!" He shouted. Donnie grinned.
"Oh? You thought I was attacking her? Think again shell-brain." He said. Mikey looked confused.
"(Y/n) what's going on?" He asked.
"I-I..." He scanned you for bites, but he didn't find any.
"What did you do to her!?" Mikey shouted.
"I didn't do anything. She let me~" Suddenly your head felt like it was on fire. You screamed in pain. Mikey gasped.
"(Y/n)!" You felt the virus take over. You grinned, your eyes going black.
"Sorry Mikey~" You cooed. He looked scared. Suddenly, he spotted the cure on the counter. He grabbed it, but you were faster. You kicked him over and Donnie grinned.
"Get him." He ordered you.
"(Y/n) snap out of it!" Mikey said.
"Oh come on Mikester, it'll only take a bite." You said.
"Never!" He said. Suddenly Leo and Raph were there. You remembered that Mikey had the cure. Their eyes were normal. You and Donnie glared at them. "Donnie infected (Y/n)!" Mikey said.
"Grab them!" Leo ordered. Donnie pushed past Mikey and you dodged Raph and Leo. You both hurried to get to the egg, but Mikey got his nun-chuck chain around you. You shrieked. Donnie noticed and gasped. He tried to help you, but Leo and Raph grabbed him. Mikey gave you the cure and you fell to your knees as your mind cleared. He gave Donnie the cure and then Leo destroyed the egg.
You got up and Raph asked if you were okay. You nodded. Donnie got up and he looked at you. He looked nervous.
"U-um...(Y/n) I didn't mean to-"
"Please don't talk to me." You said, cutting him. You went to the dojo to get away from him and sighed. "What was that?" You asked yourself. "And why did I like it so much?"
Donnie's POV
"What the heck happened between you two?" Raph asked.
"I don't want to talk about it." I replied. I went to my lab and locked the door. I sat down at my desk and groaned as I put my head down on the table. "I'm such an IDIOT! Why did I do that!? Why in the world did I kiss her!? I could've bitten her and she would've forgiven me, but no! I become a pervert and I kiss her!" I said. As I thought about it I realized something. She'd kissed back before she'd turned. "No, she kissed infected me. She wouldn't have kissed back if I had been normal." I said. "Would she?" I had no idea what to think. I felt horrible for infecting her, but I felt worse for doing it the way I did. No matter what happened, I shouldn't have done that. I sighed. "Now how in the world am I going to tell her I'm sorry?" I asked myself.
*2 hours later*
I looked around for her. I found her in the kitchen. I wondered why she was here of all places. Still I walked up to her from behind, but I made sure she knew I was there.
"U-um...(Y/n)?" She turned and sighed.
"What?" She asked.
"A-about what I did...I'm sorry. I wasn't thinking clearly and I don't know why I did that." I said.
"Donnie, I'm not mad." She said.
"Wait....you're not?" I asked. She smiled.
"No. It's okay. While I wasn't happy you infected me, I not mad that you kissed me. I thought about it and I understand." She said. I was relieved.
"Thanks for forgiving me." I said.
"I haven't forgiven you yet." She said.
"You haven't?"
"Nope. I still need one more thing." She said.
"What's that?" I asked. She kissed me. I was shocked, but I kissed back a moment later. Ever since I'd met her I'd actually liked her more than April. I pulled her closer to me and her arms wrapped around me. I loved every second. When it broke she smiled at me.
"Okay. Now I forgive you." She said. I chuckled.
"I love you." I said.
"I love you too Donnie, but next time something wrong with you....please don't kiss me."