If the funds given to you are considered a loan that must be repaid, the court is probably requiring you to produce a document saying as much. The document should come from whomever is loaning you the money and therefore, it doesn't matter if that person is a girlfriend vs fiance or mom or friends. The money you get from the third parties, should not really matter, since it would not be considered recurring income to you and so should not be used to calculate child support. The bigger issue you have is whether you are making efforts to seek employment commensurate with your historical ability to earn. Further, notarized documents that cannot be cross-examined are considered hearsay, so you may want the person to offer testimony at the hearing. Speak to an attorney for further assistance.