I just got out of bed and made some tea! ;) Sunday is a lazy day.
Yes, all people can lie to us. The Internet is more dangerous though, so many people pretend to be someone else, or trick us. It happens in real life too, but not as often maybe.
Yes it is difficult to love someone on the Internet and trust them. It almost happened to me too. It did not end happily. One of my friends is living in America with a girl he met on the Internet, but I don't know if he is happy. He is not interested in America, he wants to live in the UK, so I don't know what he will do.