Yes you can - but if you add that Paypal account to an Ebay account that has had issues with Paypal your friends Paypal account will go down as well, it is never good to use friends accounts - how valuable is your friendship?
Yep, go with a whole new bank account. Another idea to consider is to open a business account, that way you can get a debit card under your friends name as an employee connected to your account.
Like Granny asked, I hope you guys are good friends!
Why not put the work in and make your own accounts and keep your friend.
Unless you are perfect and none of us are, if you make a single mistake your friends account will be gone and that is not only stupid but is not right.
Risking a friends or families account is selfish and wrong.
One link to your old banned account and you will lose a friend.
One more time for those who continue to want to abuse a friend.
Do not do it.
Do your own work and dont risk your friend or families accounts. They might need it themselves someday.