Will my boyfriend get out

This is a very jurisdiction-specific and fact-specific question. Why was he on pretrial release at the time of his DUI? Where did this happen? Each county has its own procedures and criteria for pretrial release. If the original charge was alcohol-related (like another DUI), then it is not unlikely that they will hold him in jail until both charges are disposeed. Judges are just lawyers who didn't like practicing law. They do not want to be forced out of office by releasing some alleged drunk driver who can't stay sober and off the roads. On the other hand, if your bf was on pretrial release (ROR) for some relatively innocuous charge (say, shoplifting) there is a better chance that the court will grant him a bond. Especially since he has served a month already. Good luck.