Am i normal

Im a huge panty fetish, i like the sight of panties very much. I have this problem when i was 14 years old, i feel i started liking them when i watched women in bikini and that obcession increased day by day and now im 28 and i still like panties. When i come across soiled panties in my friends house, i cantt stop sniffing them and masturbate knowing they are my friend's sister panties. Once i was caught stealing my aunt's panty and she was shocked and didn't say a thing, may be she thought im crazy for her, now i want to stop it, can you people give any suggestions....plz...want to break this habit..