The answer to this question depends entirely on which Sebastian you're talking about! There are many fictional characters named Sebastian, and each has their own unique story and love life.
To answer your question accurately, we need more context. Please tell me:
- Which book, movie, or TV show is Sebastian from?
- What are the main plot points of the story?
- Is there a specific event or scene you are referring to?
Once you provide me with this information, I can tell you who Sebastian agrees to marry.
For example:
- If you're talking about Sebastian from the Disney movie "The Little Mermaid," then he agrees to marry Ariel after she makes a deal with Ursula, the sea witch.
- If you're talking about Sebastian from the video game "Fire Emblem: Three Houses," then he agrees to marry Lysithea after they develop a strong bond and confess their feelings for each other.
Knowing the specific context will help me provide you with a definitive answer.
