Ocupo una mano con mi madre

I need you to advise me on what to do with this problem I have. I'm 20 years old and my mother is 47 and lately she's been behaving strangely towards me, like she's more forward, doesn't care if I see her in her pajamas (underwear and a t-shirt) or sometimes I catch her without anything on but she doesn't notice, I have quite confidence with her, even when I arrive and give her a butt pinch while she's in the kitchen, she also likes to pinch my butt, but lately I've been feeling like telling her that if she helps me ejaculate or starts a sexual relationship with her, whether it's something small like taking a bath together or letting me see her naked, or even giving me a blow job because this is one of my fantasies I have with her but I don't know how to get to that point of telling her or showing her, so if someone knows how to do it or where to start, please tell me.