Can I get hiv from oral sex?

So this guy and I hooked up for about 2 hours a week ago. We were in a public setting and we started our hook up and the minute he got erect I gave him a blow job which lasted for about 1 minute because we were scared that we were going to get caught he didn't cum or precum in my mouth at all. After that we started to jerk each other off and cum in each other's hand.

I asked him before and during the hook up if his had STD or HIV to which he said no he doesn't, he is clean. I'm a virgin and wasn't on prep nor was he.

I checked the risk for hiv via oral sex and it's quite low. Now it's playing on my mind that what if he lied to me and I get HIV.

Does anyone know if I can get it, if semen wasn't involved at all. Will appreciate all the help I can get. It's been 7 days since we hooked up