Someone told me im not pretty. :/

you are!!!!!!!

You know that you can block the person that is offending you and btw, who is it?

That's there problem... Just tell em to shut up, and do what Mr. Star Wars said:)

your photo is fake

There's always gonna be people who think you aren't pretty......eveyone's idea of 'pretty' is different.  Sorry, but there is NO ONE who is 'pretty' to everyone.   That person is likely in the minority anyway (possibly they are just jealous).....there are likely more people who think that you ARE pretty.  Don't let it ruin even your day.......move on....