Messages won't send to one number?

I have an iphone and i've been texting an android. It was all fine until my messages won't send. I sent a message to another android user & it went through like normal. But everytime i text the other person it says "message failed" & i try to send it again but it won't go through. Did they block me? Or is the phone dead?

Help to cancel order on itunes?

I just want to know what this one charge is on iTunes, but I can't get an answer from the phone number or the dozens of options on line. What is the problem with iTunes that it has to be so difficult?

I miss the 2000s, what should I do?

By the 2000s I mean the 2000s decade, particularly the years 2000-2006. Life was just so much more fun and simple, better music, moves, people weren't as mentally unstable as they are now, nowadays you have Instagram you see all these weird crazy people, I feel like the 2000s is the last good decade, everyone still had flip phones back in the 2000s so no one just stared down at an iPhone all day, I just miss those days of waking up in 2004, going to the mall, knowing life is good. Nowadays you have all these depressed people and even kids, things just aren't the same nowadays in the 2010s. Does anyone else feel this way? How should I handle something like this?