Sooo my fiance found me s girl

So we are swingers in an open relationship. We've had 3 some before but he met this girl. She's a regular at his bar. They chatted and well she likes me. She really wants to come over tonight. 1 I have not 3 year old. 2 my honey wants to be here and just watch and he works till 12. Ugh. I really wanna have some fun play.