You could totally do 'I threw up' for Felix while he's visiting Luke and Nate in the older verse!
A/N: I should mention, Felix actually grows up to be the most,,, grown of the Di Romas. he’s 18 here, so he’s like six foot and a little stocky.
Felix was bouncing nervously on his toes, waiting outside the door of the apartment. It took him a moment to gather himself, finally rapping lightly on the front door. Seconds later, it swung open, and Nate offered the younger boy a welcoming smile. “Hey. Come on in. I think Luke’s in the kitchen.” He stepped aside to let Felix in before dropping back into the living room’s singular armchair.
“Thanks...” Even compared to his usual anxious self, Felix seemed on edge, and despite having grown to be almost a head taller than Lucas, he immediately latched onto his older sibling like a child.
“Felix! I almost forgot you were coming over!” Luke squealed in delight, spinning around to hug their younger (but certainly not little) brother.
The brown-haired boy forced a smile. “How are you doing?”
“I’m good! We’re great, actually. How are you, mon amour? I haven’t seen you in weeks!”
Felix shrugged, mumbling, “Okay, I guess...” He wasn’t a very good liar.
Lucas furrowed in concern. “Something’s bothering you. What’s the matter?”
The younger boy’s voice lowered to a shaky whisper, “I think I’m getting sick. I threw up earlier... I still don’t feel good. I’m really afraid it’s gonna happen again.”
“Oh, amour...” Luke’s full lips twisted into a pout. They reached up a hand to feel Felix’s forehead. “You are a little warm. It’ll be okay. I’ll take care of you. Go sit on the couch, I’ll make tea and be there in a minute, okay?”
“O... okay.”