1. She may seem friendly, but deep down, she's a real cold fish.
2. He's always been a bit of a cold fish, never showing much emotion.
3. I tried to strike up a conversation with her, but she just stared at me like a cold fish.
4. I don't trust him, he's a real cold fish when it comes to his true feelings.
5. She's like a cold fish when it comes to showing affection.
6. Don't expect any sympathy from him, he's a cold fish when it comes to others' problems.
7. He's known for being a cold fish in social situations, never engaging in small talk.
8. She's a cold fish in the office, always keeping to herself and never participating in team activities.
9. I knew he was a cold fish when he didn't even shed a tear at the funeral.
10. She may be beautiful, but she's a cold fish inside, never letting anyone get close to her.