Um,

No you dont HAVE to install Windows first, but for a lot of new users it is the easiest way as linux will detect the windows partitions and accomodate for that, but windows will not detect linux partitions because ... well, for lack of better words, bill gates sucks lol

Anyways, it had nothing to do with the boot loader as i didnt touch the MBR, only the partitions.

This thread is closed anyways, Thanks