I did a little investigation on lukeisback and realized that Luke was begging for a ride to AVN long before the infamous Randall New Years Eve party.
http://www.gofuckyourself.com/showthread.php?t=551239

Did Holly catch Luke in some cyber/phone chat with a former Asian-Canadian pornstar and this led to the demise? Maybe he used the M word (NOT marriage, rhymes with Katja) during a passionate lovemaking session and she felt betrayed. Luke portrays Holly as the promiscuous one but perhaps the party was just a big set up to get even with him and his cheating ways.

Sorry to rehash this again.

Actually, I heard it was because Holly got fed up with continually catching Luke masturbating over Martin Scorcese's 'Casino'. Apparently Robert De Niro plays a Jew in it, and there's Mafia types all over it, so it's pretty understandable that Luke was unable to refrain from beating off while watching it.

That, and Luke's insistence that he and Holly attempt to recreate certain scenes from 'Yentl' in the bedroom, including outfits, was the final straw.

I heard it off this guy called Sal, who heard it from Holly's pal Aria Giovanni during a break from performing with her in her first ever hardcore b/g scene, so its accuracy is beyond reproach...