Losing him to video games

So lately my boyfriend has been spending more time playing video games on his Xbox.... he’s rediscovered his interest.

We’ve been living together for the last 6 months, and have been together about 2 years. Before we lived together he used to play his games on nights we didn’t see each other, and for the 6 months we’ve been living together he hasn’t really been playing games on his Xbox much - unless I was out or whatever . He always like watching videos on YouTube relating to it... but I never felt like it interfered with the time we spent together.

But lately he’s got more into it, he’s wanting to watch more YouTube videos, play his games more often to the point where I feel like I’m being shut out...

For instance I say I’m ready for bed, and ask if he’s coming as well and he tells me no, he’s going to play on his Xbox. We always used to go to bed a similar time so we’d have sex. But if I go to bed, and he stays up, he’s playing for so long I’ve fallen asleep.

I don’t mind him playing games as a hobby, but I definitely value the quality time we have together and it feels like the Xbox is coming first.

I don’t know how to approach this with him in a way that won’t come across as nagging him.