I'm in love and fanasize about sex with zoey from l4d 1

So one day I woke up when to buy this game left 4 dead, only because my friend told my it was a zombie first-person shooter and well I fell in love with this video game carericter zoey and I think she's hot,I sometimes think that's she's real,and once I was Knocked out and woke up with memory loss in the hospital thinking she was my girlfriend.And I obsessed about her,dream about sex a lot,and I'm getting mental help.Please tell me I'm not going insane! PS I'm 19 and she's 18.