There are several combinations of meds that can be used in PEP, and it may depend on your location.
However, PEP was not designed for use in a situation like yours. PEP is intended for individuals who have had high-risk encounters. Your risk was extremely low, EVEN IF your partner has HIV, which is also unlikely since most people do not have HIV.
If you intend to continue having unprotected intercourse, you should both test for STDs and HIV, assuming you have both had unprotected intercourse with other people before now. That way, you will both know for certain that neither of you can transmit a disease to the other person.