As we've mentioned before, things that used to be owned by the late Tupac Shakur are valuable enough to be sold for a pretty high price. Now, you can add a sultry love letter he sent from prison to that list.

According to TMZ, the folks at Goldin Auctions are currently auctioning off Pac's steamy love note, and expect it to sell for at least $25,000. The rapper sent out the letter during his stint in Clinton Correctional Facilities in 1995, and it's supposed to be in response to a "passionate letter" he received during his time behind bars. Peep the handwritten letter for yourself here, complete with tantalizing lines like "Ever been tied to a bedpost and licked like a lollipop?" He even offers up "12 positions of lovemaking" in the letter.

Among other things that Goldin Auctions have put up for sale are Pac's signed contracts for Juice and Poetic Justice, his bullet-dented pendant, handwritten song lyrics and personal RIAA multi-platinum sales plaque for Me Against The World. The last time we checked, the pendant was on sale for $125,000.

It's no surprise to see that people are willing to cough up large chunks of change for Pac memorabilia. He's a legend, and his charisma and knack for making emotionally charged music ensured that he'd always have a passionate fan base.

Pac will get a hero's tribute when he's inducted into the Rock and Roll Hall of Fame during a ceremony at the Barclays Center in Brooklyn on April 7. The "I Ain't Mad at Cha" performer is part of a class that includes Pearl Jam, Joan Baez, Yes, Journey and Electric Light Orchestra.

20 Mixtape Phenoms That Didn't Live Up to Expectations