This one might be based on a true story...
"We are such old people," Blaine said, giggling. Having Kurt home for a few days was wonderful. They were doing all of their favorite things together again, and it was like he never left or had to leave in a few days. They wanted to cook Kurt's family dinner, so they were at the grocery store.
"But I like that we're old people," Kurt said, smiling. They loved going to the grocery store together, strolling slowly down the aisles, picking out perfectly ripened vegetables and fruits, and yelling at each other when the other tried to sneak candy into the cart.
"This tomato looks pretty good," Blaine said, but Kurt was clearly not listening. Kurt seized the cart and darted in the other direction. "Kurt? Where are you going?" Blaine called, running after him. Kurt ducked into the frozen foods aisle and pulled Blaine around the corner.
"Shh! Not so loud!" Kurt said in a hushed tone, slightly panicked.
"What's your problem?" Blaine asked.
"See that guy?" Kurt asked, pointing to a skinny brunette boy in jeans and a hoodie in the produce section about 10 feet from where they were standing moments ago. "That's Jake. He was my boyfriend in seventh grade. No one knew we were dating. He broke up with me at the formal dance that year. I was a mess and we haven't spoken since!" Kurt looked hysterical. Blaine suppressed a laugh.
"Kurt, that was years ago!"
"I don't care! Now let's get what we need and leave!" Kurt ordered, pushing the cart to the other end of the aisle. He peered around the corner before darting into the next aisle. They finished their shopping in this fashion and rushed to the cash registers.
"Are we done playing spies now?" Blaine asked, giggling.
"Blaine, this is serious!" Kurt whined, looking around, hyperaware of his surroundings. They quickly paid and ran out to Blaine's car. Once they were inside, Kurt burst into a fit of giggles. "What?" Blaine asked, now very confused.
"That was so much fun!" Kurt said, happily. Blaine laughed. He couldn't help but agree.