To be fair, she doesn’t look like she’s dying inside at all. I (facial expression reader for 12 years 💁‍♀️) detect some hints of jealousy and, how to say it, lust. Have you seen the guy in front of her? (her partner I presume) He’s old and wrinkled 👴 (I bet he can’t satisfy her in bed anymore), so she probably wishes she’d made better choices regarding her love life 🤷‍♀️ . And now have a look at the guy happily dating the anime girl 👫: he stands proud, he looks so confident for he fears not what others may think of him while he takes care of his girl. That’s what the girl sees although OP failed to, and even though her eyes don’t cry, her heart does.