loading a helper in a library

[eluser]tokyotech[/eluser]
I wrote my own DateForm library that creates HTML dropdowns of the months and days. I tried to do $this->load->helper('form') in its constructor but an error was given saying "load" was not defined. I suppose this is because only controllers are allowed to load helpers. But isn't it cumbersome to have to load the form helper every time I want to load my DateForm library?