As an older model android you don't have any newfangled motors and lids for artificial eyes, nor do you even have a dedicated "face". No, you just have a screen.
Sure you can emote, display text, and even display websites and videogames on it, but it feels very stereotypically inhuman. Sometimes it feels alienating, seeing all of your peers get these upgrades and all the newer androids being more humanlike than ever can make you jealous.
But your boyfriend... Oh you know he loves you the way you are.
Behind closed doors, your boyfriend loves the display of pretty, swirling colors. One close look and he can't look away, his eyes locked to the steady spiral and glazing over.
Emotions were always hard for you as a machine, but this... A rush of what you can only assume is pride mixed with desire.
Pawing at your chassis, unable to look away from your old, outdated display. He whines and barks at your command, letting you touch and handle him however you like. "Such a good pet" you say, and his entire world seems to light up.
Maybe you don't need that upgrade. Maybe you don't even want it.