Need help with jealousy

I have a situation with my aunt that has really been bothering me she’s not my blood relative but I’ve known her since I was 14 she was friends with my dad. I’ve become jealous of her relationship with my husband. There have been several times where I feel like I’ve been around her we’ve been talking and she was really dry, her energy was down she was rude and dismissive to me. One time in particular you know I was telling her about my goals about things I had going on with my business my weight loss journey and I just feel like everything I was saying she was like downplaying me or like saying that I couldn’t do it like this really negative. so my husband walks in the room and she’s like hey baby and she starts talking to him about what’s going on with her son and you know just starts like cracking jokes and being all happy and smiley OK so he leaves the room we’re back to talking again she starts being dry. So he comes back out you know he goes and gets dinner was in the table were eating dinner and you know we’re all talking but it feels like every time I’m trying to talk to her she’s basically ignoring me and trying hard to have a conversation with him. So then she goes to leave again and I’m like giving her by and she gives me a dry goodbye and then he yells bye from the room and she just like bye baby. So there comes another time where we go to a family barbecue and you know I’m talking to her I’m trying to have a conversation it feels like every time I try to be part of the conversation she’s acting like I’m not even talking and just talking to my sister. So then I see her going out of her way to go show my husband these pictures from her last vacation in places that she was eating and now she’s all smiling and joking in his face. So previous to that last incident you know I started to tell my husband about how I was feeling. There was a point in time when she was in prison and she wrote him this letter that included some sexual jokes that I thought were inappropriate. And I went through his Facebook and I seen like little chain messages she’s sending him and she’s like getting in comments under his pictures between him and his friends and those just like saying that he’s handsome and just like him you know exchanging jokes. I feel like you know whenever she comes around he gets all giggly he tries to crack jokes and he acts away that I really never seen him act around anybody else and so for me I feel like you know she’s a woman who has four kids by four different men you know she’s not my blood relative. At one point we used to hang out we went to the casino we spend time together but I felt like you know this last night that she came out of prison it was like she would be dismissive towards me but so warm and loving and inviting towards my husband. And so I talked to him about it and he’s like well you know that’s my auntie and he’s thinks I’m crazy. I don’t know why I’ve become so jealous. Should I just dismiss this as playful interaction?