Advice please

So my boyfriend and I are both college students still living with our parents to save money, so we don’t really have our own place other than his car (because my car doesn’t have tinted windows). But lately he’ll tease me all day and then when I think like finally he’s gonna bend me over he’s just like blow me. So obviously I want to please him and satisfy him, but then he just takes me back home. And whenever we do actually have sex he’s always nervous that someone is gonna come up to the car (which has only happened once).. but he’s only been getting nervous since summer started and we went from having sex like 2 times a week to maybe once every two weeks BUT HE STILL GETS A BLOWJOB AT LEAST 3 TIMES A WEEK

. I don’t know if I should confront him about it or not. He keeps saying that when we go on vacation at the end of next month it’ll be worth all the waiting... but I didn’t even know we were waiting. I love him with all my heart and I mean I could wait forever if that’s what I had to do, but like this all came out of nowhere.