Why did Liara try to break up with Shepard in ME3?

That seeems like a reasonable explanation. I was under impression, though, that the player was already given such opportunity during the very first conversation, but as the german saying "double holds better" it really may have been another chance for a new player to pursue another love interest. Although, honestly, it still comes off as really strange when taken at the face value, but then the devs apparently weren't expecting us to think Mass Effect relay explosions would exterminate all known developed civilizations in the galaxy, when in established lore they would