Nothing says "I'm sorry" like naming a celestial object after the girl you cyber-cheated on -- which is why bawl-my-eyes-out Brendon from "Big Brother" just threw down $109 to christen the star, "Rachel Reilly."
According to the International Star Registry, Brendon got the appropriate paperwork in order this week -- certifying the star's new name -- and even purchased a $70 bracelet with the star's coordinates to sweeten the deal.
It's not his first attempt at an apology -- as we previously reported, Brendon posted an "I'm sorry" video online recently ... after his ex-GF and "Big Bro" co-star Rachel allegedly found out he sent pics of his schlong to a girl he met online.
No worries though -- if the video didn't cut it, a paper star certificate and bracelet definitely will do the trick. Right?