if there are 2 teams wanting to win the league and they have same amount of points, wins, draws, losses, goal difference? what do they do you obviously cant both share a trophy can you?

Head to head?

Different leagues have different rules. For the EPL, if the points are same, then they look at goal difference, if that is same, then they look at goals scored, if that is also same then either they have a play off at a neutral venue if it is for the league winners or European spots or if it is for relegation, then they share the position.

This concisely explains the tie rules for all leagues:
http://www.theoffside.com/world-football/tie-breakers-for-football-teams-level-on-points.html

this happend in season 88/89 > http://footyroom.com/forum/football-talk/premier-league-198889-stunning-ending-43934

Oye Citeh fans NOT HAPPENING THIS TIME YA HEARD O_o.