Hi Dr. Hook -
Very helpful.
Thank you,
Mike
Welcome to the Forum. I'll be pleased to comment. For the reasons noted below, the exposure you mention was quite low risk and should not be a cause for concern. It certainly should not be a reason for you to seek PEP.
First your partner. Within the porn industry, actors are required to get regular checks for STIs, including HIV. If they are HIV infected, they cannot work. Thus your partner is likely to be HIV negative and it is in his best interest to work to remain that way as in the films, they rarely used condoms. Further, my guess is that he used a condom more to protect himself from you than the other way around for the reasons I mentioned.
Second, you are correct that petroleum-based lubricants are well known to WEAKEN latex condoms increasing the risk of breakage. Nonetheless, even with petroleum-based condoms, most do not break with usage. It is unlikely that your condom failed and you were not aware of it. Further, after sex, why would he lie about the condom- sex was over.
I suspect this is a no risk exposure and that there is really no reason for concern or even testing. I understand that you may choose to test for your own peace of mind but if you do, I would not worry while waiting for results. I hope my comments are helpful. EWH