friends & their boy/girlfriends

Why the hell is is that every time someone gets a boyfriend or girlfriend they completely shut out the people who have been there for them for years and years. WTF this has happened so many times, its getting fucking ridiculous. DON'T PRETEND I'M NOT THERE ON OCCASION AND THEN WHEN YOU BREAK UP, YOU EXPECT ME TO CATCH YOU WHEN YOU'RE FALLING. Don't put me as your last priority and then expect yourself to be my first.
I FCKING HATE PEOPLE!!!