***SPOILER WARNING***
Meryl, about that spoiler you posted in black. At the beginning of GTA III, Catalina shoots her boyfriend (The mute guy) in the shoulder leaving him at the Liberty City bank crime scene to take the fall. She betrays him, but in the intro they are actually in a relationship. Later, when they meet, he's naturally a little P.O'd at her, so no lovey-dovey stuff.
Listen to Catalina's words in the intro, you can tell they were kinda dating.