Value those who have been making struggles to make your life better. Those who always try to find out time from their hectic life routines, those who try to maintain a peace-level in your heart, those who never let fade away the smile of face & brightness of your eyes.
Respect them! Always respond to their messages & calls, appreciate ever their tiny efforts to keep you on a position where no one else is! Realize that someone else could be in their life but they chose you! They have feelings for you! They adore you!
Getting such people in live is not less than a blessing or a miracle! So value, respect, appreciate them & make equal efforts to let the relationship grow every single moment!