She obviously wanted Big Mac, but she never acted on it. She never tried anything to get him after she met him that one Hearth's Warming. Next year's Hearth's Warming she finds out he is taken and her heart is broken. Had she shown any interest or tried to be with him, she might have had a chance. But she waited too long - the entire year - and now she has no chance. Unless of course ponies practise polyarmory but we don't know that.