The twins had both latched onto you. Both adored you. You took up for them, made them look good, indulged their foolishness.
You were a soldier for a time. And when they told you they wanted somewhere for their empire you conquered it in their name.
Then you returned home as a politician and helped them come up with good plans and strategies and amended their silly ideas in court to make them somehow look smart.
You were one of their favorite nobles. Soon you had invites to accompany them to festivals and parties and sit with them in their box during the gladiator games. Their favor was powerful, giving you influence and power over Rome's rulers and the two showered you in extravagent events and gifts...
But oddly...you somehow found yourself endeared by the twins...even...enjoying their company?
You sit with them now lounging in their palace, watching the sunset over Rome on their balcony. You're in between them Geta happily cuddling you on your right, Caracalla snuggling you on your left. Both of their arms wrapped around you adoringly, both their heads on your shoulder. Both humming and cooing happily giving you tiny kisses and little touches as the sun shines on the three of you, drenching their Ivory skin and firey hair in fleeting sunlight. Painting them like two young gods with their lover.