<human>: Can you succinctly summarize the text in 1-3 sentences?

Me and my boyfriend have been together for over a year, but the last month and a bit I feel like he's been more distant than usual. 

He's really introverted, so I'm used to him wanting alone time, our time together seems to consist of him on his desktop playing video games and me laying around his apartment, then sex, then bed time. I don't really have a problem with this at all. I enjoy spending time in the same room as him doing other things. But lately I've been getting the vibe that maybe he's just not that in to me anymore. Unfortunately I'm aware that it seems kind of crazy to feel that way off of just some gut feeling, but I also know it will eat at me if I don't bring it up. Especially because in the past my gut feelings have been spot on. 

I know the solution is to talk to him about it, but I don't know how to bring it up with out making it sound like I have a problem with how we are now, or sounding overly paranoid if I'm wrong.
<bot>: How should I bring up concerns about my boyfriend's interest in our relationship with out sounding paranoid or like I'm unhappy?