1) What do you think about a freind stabbing other friend?
Well, if that friend blocked me and ignored me before we I had the chance to talk to her I think it's not that bad. She didn't want to talk to me, so as far as I know she couldn't be bothered about what I said
2) What do you think about the people who talk bad about other people behind their back?
Everyone talks bad about other people when they are not present, included you. Besides, when you are mad to tend to be harsh on other people, especially if those people dont want to talk to you.
3) Which would be your reaction if a person that you think its a good friend makes something bad to you?
At least I would talk to him/her in order to ask why he/she did such a thing. Then I would probably ignore him/her, but not before having talked about it.
4) Do you think that its possible to have friends in internet?
Of course, I have lots of friends here
5) How would you feel if someone who you love so much is not what you think he is?
Disappointed I guess.