Well it's still a case to case basis,depending upon the growth of a certain relationship.As for me it feels like connected to someone.It always makes you feel complete and cared.Knowing there's always that someone who stick with you through ups and downs.Knowing that upon waking up in the morning everything feels good and you are loved.Loyalty is rare these days ,so you are lucky if you've found the one that's been sincere to you since day 1.