Focus on something else. Spend time with your mates and just forget everyone who isn't thinking about you. why should u be thinking about them, if they're not thinking about you. Don't sit around...
You cannot. Nor why should you except in the case of children. There are perhaps some pornographic images which minors should not see, but what one person finds offensive another will consider it...
No it doesn't, touching yourself while watching porn only relaxes you and makes you feel good. Things like, "You'll go blind." "You'll shrink." are lies made up to stop people from masturbating.
you don't have to stop thinking about him just try not to call him he is on vacation to clear his mind and relax let him do that when he comes back he will most likely have missed you soooo much that...