My advice, Tahirabs, is to fully enjoy the remaining time you have together. Every single moment is precious and sacred. More than that, love is what life is all about.
Love one another, as deeply and as fully and as completely as you can.
Don't let the fear of what may come tomorrow steal today's joy.
And when the time comes, let your loved one go. Trust that everything that must be will be. You can trust that love will always find a way.