You can feel attracted to a person by the things he/she says to you by email. And a picture can also look very good. And maybe you think you are falling in love, but the only way to get a good and real picture of a person is to meet him/her. Then you can hear a voice, the way he/she moves and acts. And believe me.... it can be very disappointing.....

So I don't think you can really fall in love only by internet.