Confused af

Me and my boyfriend has been dating a year. When we met well we went to the beach together. ( weird I know ) but anyways he’s a truck driver 23 years old. I’m 20. We see each other all the time but also sometimes we don’t. Last time I stayed with him was 2 months in the truck. But he came and saw me lastnight did a couple hours and we were nervous. We have never been nervous before. Even when we met for the time. What could this mean ??