How to stop someone from saving your deleted

hello,
my ex partner has has found a way 2 store every single page and everythin on it when i am online and he is able 2 view it when hes not online, everythin 2 my pass words my facebook chat even when i have pressed clear chat history my emails my inbox facebook msgs and out box msgs, comments i have made on peoples profiles and status's and is able 2 read the status's i have putt up that day he is able 2 read absolutely everything i have found the file it is in and i can not open it so i downloaded a program 2 unblock files done it and it still wont open it is a PKL file. he has some way found a way 2 record every single thing im doing on the internet even though my internet and all very high and i have blocked all cookies and data from saving on to my computer whatever he has done has overided that. I hope some one can please help me find out what he has done and to stop it thank you :)