Short italian translation, can someone tell me if its correct :) ?

hi i m italian u can traslate i used to be obssessed with IO ERO IN FISSA(INFORMAL WAY OF SPEAKING)or IO AVEVO L'OSSESSIONE CON I CAVALLI exc...i would ride(io vorrei cavalcare)groom(i don't know the meaning..)the missing part i don't understand what u want to say!sorry...coz the first and second phrases have no sense..