Stiles has a crush on Scott by Scott is 'straight'. He is also the son of Klaus and Peter Hale-Mikaelson. Peter is 300 but looks 30 and Klaus is 1,000 but looks 30 and when he teaches at the school he goes by Klaus Mikaelson because it would be suspicious if he had Hale because then the pack will ask Derek and Peter if they are married to someone.