Actually they didn't get busted for that. Bo initially believed the Una Mens were there to punish them for "crossing party lines," but in fact they were there to arrest Dyson for Flora's murder, leading into "Epoque." Bo and Lauren are back together; we just aren't seeing it much. Technically Bo and Lauren are a couple, but it's not an exclusive couple due to Bo's succubus nature, and thus she's started fooling around with Dyson fairly regularly again. And the writers' focus seems to be more on exploring how the relationship between Lauren and Dyson is evolving from rivalry to grudging respect to friendship.