Refinance

[Justin Bieber]

[TO mess] around with other people while dating a man/woman [that sucks] in between the [sheets]!

[Cami]

Finance (something) again, typically with new loans at a lower rate of interest.

[Zipporah Schumaker]

to change the terms of a mortgage (= agreement by which you borrow money to buy property) or loan, usually by increasing the amount of it in order to be able to borrow more money: