It is a real room. Recording studio's used to have an echo room, with speakers and a microphone to add a certain amount of echo to a recording. But nowadays studio's use digital reverb machines.
Damn you look to be one of the best fucks
You are such sweet couple!
In general, women are not *available* to all and sundry. They don't want an invitation to a date from just anyone. An indicator light would simply attract anyone and everyone - and therefore present women with a horrendous social scenario of constantly having to *be kind* and make nice excuses to the scores of guys that approach them.