It's so hard for me to let my 5 yr old have friends over right now the only one who comes over is so…

It's so hard for me to let my 5 yr old have friends over right now the only one who comes over is so much more rambunctious than my son. Today I finally gave in because he has been being so good and so sweet lately and oh my they both did a complete 180 from last time they were so calm all night! I hope it sticks.