Good find! The making-out seems to drain HP and also cause the game's poison status.
The Greek Life President also has unique comments when:
1. All of her minions are KO'd AND
2. Only one of your team members are alive.
For example, she comments that she's "curious" when it's just her and your female party member alive. Then she'll spam her charm until one of you goes down! Nice touch, I'd say