Life is entirely far different from what we watch in movies and read in novels, most of these are just to elicit some emotions in is and they work because we are humans. But reality will always reveal itself.
I don't know what your experience was, but maybe you just do not believe in the kind of love you knew or you haven't shaken off everything that happened then. Well, love exist but many human factors can enhance or pollute love and our definition of what love is.
I hope you get convinced and find real love someday, with the right person.