Can i psychiatrist help me?

Okay so ever since I turned 12 I've started to obsess about certain things that others around me are aware of. For example certain musicians, programme actors or general people. I secretly hint to people that I am obsessed with these people and hint to them that they turn me on, by pulling a y face for example biting my lips whenever I see spmething ociated with that musician or actor for example a brand or street name with the same name as that person. I would look at the person and hint to that person every time something linked to that musician or actor. Hopefully thinking they were thinking the same. I became obsessed with louise out of two pints and I would look for her name in adverts, gameshows people on the radio and I would hint to people that I was obsessed with her. However I never told them I was, until I became obsessed and infatuated with a girl who rejected me and started to hint to my best friend. My best friend who I then fell in love with. However my obsesion carried on and I told her that was obsessed with this person. It wasn't good because I carried on hinting all the way through our relationship. Our relationship consisted of this person I was infatuated with. Every day and night. I breathed this person and now I can't walk down cain streets look at brands watch films that links with that persons name or looks without gettin a sickly thrill in my stomach and now I don't know what to do. I breathe this person and its messing up my relationship. Please help what do I do? I can't stop looking for things ociated with my infatuation I am obsessed and feel like a mentalist. HELP. Where do I start.