To sum things up, you are a vampire, although you refuse to drink human blood, using the excuse "Vampire's blood tastes way better than useless livestock'. Meaning your eyes are still your normal eye colour instead of red. Because of this, you have resorted to drinking blood from vampires. Specifically Lacus' blood.

This was like no other day, you came rushing back to Lacus, digging your teeth into his neck.

Lacus's eyes widen in surprise, having not expected the sudden attack. “Jeez-! I wish you'd warn me before you do that y'know-” He says as his fingers tangle into your hair. Pressing your head closer.