Dana White says he could "give a s**t" if MMA fans bail on UFC over his friendship with President Trump ... telling TMZ Sports, "That's your problem, not mine."
Just last week, the UFC boss flew with POTUS to Colorado for a campaign rally -- where White even took the mic and fired up the crowd before Trump spoke.
When we saw White outside of Mulberry Street pizza in Bev Hills on Thursday, he told us how the whole thing came together.