Caught My Boyfriend Watching Me Masturbate

I'm a forty-something prof and I've been sneaking into my boyfriend's room to watch his porn. He never notices because he's always so focused. Last night, though, I was lying there on his bed, touching myself with one hand while the other held a pillow over my face for extra vibrations, you know? And I swear, right when I'm about to come, he bursts in like a cartoon character hitting the wall, panting and eyes wide open. He froze as I climaxed, squeezing my pussy tight around nothing but air and that damn pillow. Afterward, we just sat there for what felt like an eternity before he finally spoke up with this mix of lust and shock. It's not that I mind him watching me or us going all the way after, it's more... is it weird to feel a bit disappointed when the real thing interrupts my private moment? Anyone else ever had something similar happen? Is it just me being silly?