I’m becoming jealous, which is new

I have never been the jealous type. I am unsure why my jealously as recently started but I don’t know how to manage it. So help would be appreciated!!

I have been married for 7 years. I have a bonus daughter and I am great friends with her mother. We all have a beautiful relationship. Over the past few months I have grown jealous. Out of the blue!!

For the past few months my husband has been reminiscing with his daughter about all the memories they have when they all lived together. It’s been constant. Every night at dinner they talk about the past. They have done this before and it never bothered me because that was an important part of their lives…but recently it has been.

Also, because we are great friends with my daughter mother she often will send her over with extra baked goodies she made. My husband LOVES them!! And it’s making me jealous! Again, never was jealous in the past when this happened.

I have yet to say anything because I am hoping this phase will pass. I’m embarrassed that I am jealous and have no valid reason to be. This emotion is exhausting to hold back though!!!

Wtf do I do?