Complex sentence: Shakespeare tells Gnomeo that his story is very similar to "Romeo and Juliet" and that it is likely Gnomeo's will have a sad ending as well, however, Gnomeo refuses to accept that sort of ending.
Split into simpler sentences: Shakespeare tells Gnomeo that his story is very similar to "Romeo and Juliet" and that it is likely Gnomeo's will have a sad ending as well. However, Gnomeo refuses to accept that sort of ending.