If the boyfriend refuses to repay the loan, the parties can call the police, but the public security organ will not file a case, because the dispute of non-repayment is a civil dispute, and the parties can handle it through litigation. If a party wants to bring a lawsuit, it may prepare a complaint and submit it to the people's court with jurisdiction.

Legal objectivity:

Article 675 of the Civil Code stipulates that the borrower shall repay the loan within the agreed time limit. If the term of the loan is not agreed or clearly agreed, and cannot be determined according to the provisions of Article 510 of this Law, the borrower may return it at any time; The lender may urge the borrower to return it within a reasonable period of time.