Agreed. Real friends don't only want to be "friends" when it's convinient for them. If you realize that someone isn't putting forth any effort into a friendship, and you find yourself going out of your way to try to keep the friendship alive, just let it go. if it isn't worth it to them, shouldn't be worth it to you. You don't have to question a true friendship or think twice about it :)
I understand this quote more this year than any before it. It's sad when someone loses that title to you, but then you remember that relationships can't be or feel one sided, and that you can't force something that probably began ending a long time ago.
When you face difficult times, the ones beside you in the end are the only ones who matter. When you quit worrying about everyone else's problems your life becomes a lot less hectic. Thankful for those in my life and even more thankful for those who left!
If you find someone who makes you smile, who checks on you often to see if you're okay, who watches out for you and wants the very best for you, don't let them go. Keep them close and don't take them for granted. People like that are hard to find.