It could have been a case of dumb and dumber but you used your brain and wore a condom.Congrats.You're safe.There was no unprotected peneration.
You were never had any risk of HIV because your penetration was protected. Surface rubbing does not become the route for transmission.
Never believe in words when it comes to serious matters like HIV. Many infected people aparently look healthy because they do not have any symptoms, but can transmit the disease.
Also even if somebody shows me his/her test report done only yesterday, it does not guarantee that he or she is clean because any exposure during past few weeks will not be covered in that test report.
I guess I'm the type to really freak out. I know tons of people do one nighters and never worry but I'm not in that category I don't guess.
Then stop doing them.You have a girlfriend.