AceShowbiz -

Khloe Kardashian will give everything she has to please her boyfriend Tristan Thompson. Instead of going in a traditional way with candles and cake, the 32-year-old reality TV star is reportedly planning to give Tristan steamy sex on his upcoming birthday on Monday, February 13.

"Tristan's 26th b-day is Monday [March 13] and she plans on giving him some hot steamy sex," a so-called source tells HollywoodLife.com. "Tristan promised Khloe he hasn't and would never cheat on her and he even promised her that he'd give James Harden a piece of his mind Sunday at the basketball game for disrespecting her and basically calling her a fame w***e."

While Khloe has allegedly been spying on her NBA star beau amid rumors he's hooking up with his baby mama Jordy Craig, she's planning to make "the sex so good that the only woman he'll ever want or desire is her."

Khloe started having trust issues with Tristan after the 25-year-old hunk had reportedly been sleeping with the mother of his son Prince while he's still with Khloe. "Tristan has been juggling both women this whole time," a source told OK! Magazine. Tristan was reported only wanting "to see the baby" whenever he went to Jordy's house, "but he's still sleeping with her. It's the perfect cover-up."