My boyfriend is attention seeking?

I know this isn't about sex. Okay, so one of my biggest pet peeves is attention seeking. My boyfriend, whom I do love, seems to do it a lot. But only when we're alone. And completely randomly too. Like today he was playing video games and I was laying on him on my phone for a good 20 minutes, then all of a sudden he stops playing, pushes me off and starts complaining about how I made his stomach feel weird. He then rolls over so he's no longer facing me and starts to make small whimpers. So I ask if he's okay and he just mumbled stuff about his stomach so I apologize and he says it isn't my fault. It was like midnight and we had to get up early so I tell him to get some sleep. He agrees and gets everything set, then faces away from me again and starts whimpering and shaking, breathing heavy. But I know he's faking. He does this shaking and breathing thing a lot, but only to me. I just feel like he does it to get me to sympathize for him. He always wants me to spoon him but hates spooning me. I don't know even how to confront him about this. Like how do you tell someone that you know they're faking?