Should I let my 11year old son invite his girlfriend over for a sleepover

[ByBusyGoose]

My son asked me if he can invite his girlfriend for a sleepover and his sister wasn’t to happy about it because she wanted a sleepover with someone to and we can only have one at a time also should I let my sons girlfriend come for a sleepover ? Or is it a bad idea

Is 11 years not too young to have a girlfriend? Or maybe I'm too old-fashioned.
In my view, such an invitation is an open door to early sexual activity as they would be by themselves in the bedroom .....

I cannot believe you would even consider this.