Flirting with gfs mom

So my gfs mom is single and when I would come over she would “flirt” with me time to time. There’s been times that I go over to their house and my girlfriend won’t be home yet so I’ll just talk to her mom. She makes a lot of comments about me and my gfs sexual life. She’s walked on me and my gf having sex and her mom has told me that she misses having her own fun before. She’s also joked around about wishing my gf would share me with her. Her mom has done so much other things and I’m hoping it can lead to something with her mom.