As he walked in silence, he thought, "I don't think she suspects me. But since we're going to be living together, I need to be more careful." He decided to ask Charles to add another lock to his room. When he reached the 60th-floor stairway, he suddenly froze. Valerie was standing in the doorway, looking at him. Matthew's heart started racing. He wondered, "Didn't she just leave? When did she come back? Did she see me and Charles talking downstairs?"

Valerie flashed a smile and said, "Hey, Mr. Granil! I just went out to grab some breakfast, but I didn't know the door code. I pressed the doorbell and waited a bit, but I figured you had already left." Her explanation seemed to calm him down, as he was still in shock.

Matthew let out a secret sigh of relief. She didn't seem to have seen him and Charles together. "But we better be careful in the future," he thought. He entered the password in front of her.

Valerie had the password memorized. When she walked into the house, she put the breakfast on the table. Unsure about Matthew's hiking plans, she'd gotten extra servings, giving him plenty of options: breakfast wraps, pancakes, toast, hash browns, and more.

"What is this?" Matthew asked, pointing at something yellow and round.

"This? It's an eggwich. You've never had one before?" She smiled and explained, "It's got two fried eggs on the top and bottom, with a juicy grilled beef patty in between. Kinda like a burger, but with eggs." She loved eggwiches, so she bought two.

When she took a bite, oil stained the wrapping paper. Matthew couldn't help but frown. Is it just her, or do all ordinary people eat junk food for breakfast? he thought.

Matthew didn't want to look suspicious, so he picked up the breakfast wrap. It looked less oily, but then he found a piece of fried mushroom in it. "Seriously? Do I have to eat this?" he thought in disbelief.

When Matthew hesitated, Valerie asked in confusion, "What's wrong, Mr. Grant? I understand you haven't had eggwiches before, but breakfast wraps are pretty common."

Matthew had maintained a strict diet for years. He only saw his staff eating such food. For breakfast, he had half a sandwich and a cup of black coffee. For lunch and dinner, he ate low-fat meat. He never ate high-carb, high-fat food and stuck to his gym routine.

He held himself to extremely high standards. He believed that someone who couldn't control their own body was more likely to lack self-control in other areas of life.

But he was only a driver now. "If I don't eat this, I might give myself away. I can't believe I have to put up with this! Never mind. It won't hurt to eat just one," he thought.

But after one bite, he was surprised by how good it tasted. It wasn't as dry as he expected; instead, it was crispy and yummy. He felt a little better.

When he saw the lattes on the table, he was relieved, thinking, Finally, something I can have. Although he usually didn't like milk in his coffee, it was better than nothing.

He took a sip, and his face twisted immediately. It tasted strange. His good breeding prevented him from spitting it out, so he suffered through it. His face darkened. "What is this?"

"Latte," answered Valerie.

Matthew was lost for words. "Seriously? It can't be a latte." The taste, thought Matthew, was novel and dramatic.

Valerie suddenly realized. "You don't like pumpkin spice latte? What a snob!"

This cleaned-up version addresses numerous grammatical errors, improves punctuation, and enhances the flow of the narrative. I've also removed some unnecessary repetition and clarified ambiguous phrasing.