"With the number of Gryffindors here, you really don't want them to get bored." Remus laughed softly, although, given that four of those Gryffindors were himself and his friends and Remus knew what could happen when James and Sirius in particular got bored? Not bored was a good thing. Keeping their minds occupied was the best thing for all of them. He was also fairly certain Regulus' furnishings were far more likely to be damaged by random people appearing than random objects, which made the rest of the conversation far more pertinent.
He tilted his head forward and to the side, one eyebrow raised. "And, yet, how many others have actually set up passwords for the other places most often protected by password?" he pointed out with a soft 'smirk'. "The only others I can think of that would consider it are you and Snape. A few more who'd have put spells on their rooms that don't have guardian portraits. But, as long as you're not inadvertently trapping yourself in here with whoever arrives, should they appear here, adding more spells to keep people out seems well advised to me."
Chuckling, he shrugged and nudged at Regulus' knee with his own. "It just so happens here is where my favourite person in the castle can usually be found," Remus teased. It was entirely possible he would end up moving into the Slytherin dorms with Regulus. If things continued to progress as they seemed, it was pretty likely. But, Remus was enjoying the dating and the lead up, things neither of them had really had a chance to experience before, and was in no rush. It wasn't like there was much to move, in any case. He had a couple changes of clothes stored in his room and everything else he kept on his person out of long habit. He also couldn't help but smile warmly at the thought Regulus wanted share his home with Remus, so there was little argument to really be made. "Did you have something specific you wanted an opinion on?"