For some weird reason my partner's iphone safari history is showing up on my macbook's safari? Only my phone is connected to my macbook (for imessages and icloud), so I can't understand how his history is showing up when mine isn't? How is this possible? He has used his phone as a hotspot before and logged into his icloud for itunes once but his history has been showing up way before then? Please help clarify to stop this!
To check and control which devices are trusted on your mac or apple ID, go to System Preferences and click iCloud
Then via the Account Details button, select the devices tab, from here you can control which devices are trusted.