Is Holly going to marry Artemis?
No one knows. They kiss in the Time Paradox but only because Holly becomes a teenager again during the leap back through time. After Artemis tells her he lied to her she regrets it but they even it up again. She said the only thing they can have now is respect and friendship but who knows? I think Eoin is planning a relationship between them (even though they are of two different species) but we won’t know until the next book comes out.