Too Scared Of Getting HIV.

Hi, my name is Hugo and i'm 21 years old, here's the thing about me that you need to know, i'm afraid of getting HIV/Aids, to the point that i will not kiss someone, today i have a date with an old friend and something might happen, i'm still a virgin so anal sex isn't happening, but Oral sex freaks me out, mostly cuz i don't know if he is lying to me about his status, he's a great person and promises me that he always uses a condom and he's careful too, what should i do? should i trust him? should i stop being so scared? how do i enjoy this without fear?