I need to see if my boyfriend is using my computer to look through my facebook or just look at porn.?

[piquet]

since he is actively deleting stuff from the history, he clearly hasn't realised that chrome has an "incognito" mode which doesn't keep any history while browsing.

if you have a look in the google extension "store" you should be able to find an extension/addon that'll password protect the settings in chrome, meaning next time he does it he will then be filled with panic when he realises he can't delete the traces of what he's just been upto.

if you're feeling voyeuristic and slightly brave you can install a vnc SERVER on the pc to watch the pc's screen in real-time (choose "silent install" if given the option) and then use any vnc VIEWER on your mobile from the iphone/android app store.

SERVER download here:
http://www.tightvnc.com/download.php

on the VIEWER you need to provide the ip address of the pc on your network/wifi (see network properties in system tray) and you will see the computer's screen on your mobile screen - be aware that if you tap the screen on your phone it will register as a click on the pc.