Violet / Aragorn
I had a feeling you were going to ask about her. Well there's two versions. The books and the films. She's featured more in the films in the books, but they end the same. Arwen chooses you and stays behind while her people leave for Valinor. If she arrives, I'll let her explain it more to you. That's sort of a private conversation. She joins you in Minas Tirith.
Ships. Oh! I think I know what he means. It's short for 'relationship'. Sometimes fans love seeing two characters together like you and Arwen. They call it 'shipping'. It's called 'canon' if it stays true to the source, like the books or the movie. Sometimes people take characters that aren't together and imagine what it would be like if they were. For example, some people will imagine what it would be like if you ended up with Eowyn. Some will go further and pair you with Legolas. It's all imaginative, based on the reader.