Is it bad to invite my boyfriend over when I'm babysitting?

If the kid is asleep and its parents won't be home for 4-5 hours, could I get away with it? I know about nanny cams and that the parents could come home early..but we REALLY want to hangout and it will be too late after. Is this a HORRIBLY bad idea, or fine as long as we're smart about it and makes sure he leaves early. please answer asap the babysitting is in an hour and a half lol. thanks
Updates
+1 y
my boyfriend would only stay for 30-45 minutes out of the 5 hours I'm there. the little boy will be asleep the whole time.
Is it bad to invite my boyfriend over when I'm babysitting?
Post Opinion