It can be because he has lost interest in friendship. Still you can convince them to be your friend.
You can't. The PIN would be texted directly to that phone number, so unless it's your phone or a friend's phone, you'd have no way of knowing what it was.
Ask him.
He probably won't break up with you just because you haven't texted him as much as you did before/ as much as he texted you. If he does talk to you about it, explain why you haven't been able to text, and tell him you still care about him. If he still doesn't understand, it probably isn't worth it anyways.
I have an iPod Touch 4th Generation, and I tried texting someone I'm sort of in an argument with. When I texted her, it instantly said "Not Delivered", but when I texted another friend to see if it did the same, it sent right away. Is this a sign I was blocked? I kept trying and it did the same thing. Is it possible she blocked me? Oh, and another thing. I'm in a group message with her and another person and I can still text in that and see when she texts in that.
It means they can still get a notification that says someone IM or texted you and they can like open it up and reply
If he texted you a nice friendly text then you guy are still friends, but if he texted you a "I need to talk to you" then he is still needing you. It might just mean he stills values your friendship depending on what the content of the message is. Don't read too much into it otherwise.
drunk lol
she must do, some houseworks, schooll homework, be kind to parents and help them, then shell get the phone.
Meet up and discuss things.
He means he has not got a girlfriend and you split up with him for nothing. No he is not interested, he was being polite by replying to you.
I would still be friends with them if my friend would still talk to me.
If he calls you and wants to hang out. If he doesn't initiate meetings or tries to contact you in any way - he's not into you.