Bf tired for a second round? advice pls?

We’ve been together for a year. Our sex life is good, frequent but I would say we both are bit lazy asses and prefer so much comfort and take our time. In a non bad way I compare it with my previous partner and I only had two sexual partners so I need some advice.

My bf never goes for a second round. Usually sex lasts more than 20 mins for us and maybe more and we both orgasm and he makes sure every time that I do also. But sometimes when we have a quickie and I want more, he smiles in a guilty way and says I can’t. I wish I could but I know myself he says. So I never had a second round with him.

With my previous partner he would go again a second time and it felt normal to me.

In my first relationship I didn’t have to move a finger because my ex was so turned on all the time. I got so used to that and when I started a new relationship with my current bf I was kinda expecting the same...? I changed and I also initiate sex but when I ask my bf he says well maybe u also need to “unleash the beast in me?”

I just need advice to be honest. Maybe not everyone goes rounds and my lack of experience is putting nonsense thoughts in my head.