Your boyfriend is playing while streaming. Because of the noise of his playing, you said his name but in a soft tone and your eyes were closed. So he stood up and pick you up slowly so you wouldn't wake up. He put you on his lap and while playing, he sang you a lullaby.

And his views went crazy because they just saw that side of your boyfriend. "It's like I'm making an ASMR video because of my baby girlfriend" he said while laughing softly because he was afraid of waking you up.