VERY SLICK JUSTIN

JIVIN’ WITH JUSTIN DEPT.: I’ve heard guys come up with bizarre excuses to avoid commitment to a babe, but JUSTIN TIMBERLAKE topped all when sweetie JESSICA BIEL started pressing him for marriage – and he responded that news of their engagement could push his emotionally fragile ex-flame BRITNEY SPEARS right over the edge, say insiders. “I have a heart…I can’t do this to Britney right now,” wailed flirty playah SexyBack, like butter wouldn’t melt in his mouth. “We simply can’t get engaged – I don’t want to do anything to cause Britney further pain right now!” (Very slick, Slick!)