So, here is Jack Frost from Rise of the Guardians with Bridget from my fanfiction, Seeing Isn't Believing. Bridget is the newly appointed Guardian of Imagination and was originally the Irish deity Brigit and St. Brigid more or less. Her powers stem from controlling fire and summoning it in tight situations.
And yes, she and Jack are in a relationship in my RotG universe but thankfully it's progressing realistically and they both act awkward and silly around each other since neither of them know how real couples work (at least that's my headcanon that Jack Frost never had a girlfriend before and doesn't know how to get his feelings across. He wasn't aware of how attractive he was either so Bridget was fangirling after 'seeing' him for the first time) TO find out more about this adorable couple I would suggest reading my story on Fanfiction . net
Keep on Writin' and Rockin'