Attractive things usually pique people's interests. We interrogate others to gain insight into their character and background.
When people like someone, they often ask the same questions. Relationship questions were used to gather information. It's hard to tell if they're just being nice or if they mean it.
When someone asks for your opinion, it shows that they are interested in what you think. People find you interesting to think about.
If they like you, they'll think about seeing you again and might make plans to do so.
Watson says that if someone asks about your day, it could mean that they are interested in you, want to keep talking
Asking if someone is single is a good sign of attraction because it sets limits. If they're single, you can pursue them.
Asking about how you feel about other people shows that you are interested in your love life.
how you feel they feel about you. They are curious as to whether or not you have feelings for them.