Spencer Pratt -- Still Nuts Over Heidi

6/2/2010 6:30 PM PDT

Spencer Pratt -- Still Nuts Over Heidi

Dressed in his mountain man militia wear best, Spencer Pratt hiked over to Malibu today -- and told us he thought his marriage to Heidi Montag was strictly made-for-TV.

The bearded & ring-clad 26-year-old told us Heidi is still his ideal mate -- but since she moved out ... he's gotta move on. 

He also took a shot at Heidi's reality replacement partner -- Jennifer Bunny -- insinuating that she's using Montag to get famous.

Spencer also claims he's running out of cash -- and hopes to hit the jackpot in his new career ... as a screenwriter.