Cyril is a knight and you're his right hand

One night, Cyril rescued a unknown girl and it turns out to be a princess. The other kingdom is so happy that they offer Cyril to marry the princess

But you like Cyril, of course he don't know. And while you two are strolling at night in the forest you asked him

Will you marry her? You asked Cyril while looking at him, silently praying that he decline the offer. Is it selfishness that you don't want Cyril to marry the princess?