Hooking up with my best friend [FF]

Not sure how this got so long, sorry. This happened super recently and I’m still soaked when I think about it.

Background: I came out to my husband, friends, and family as bi about 3 years ago. Recently, my husband and I decided to spice things up by allowing each of us respectively to hookup with other women within certain limitations. My husband and I are friends with another couple and have been close with them for a long time. I was friends with the woman, Hannah, for years before she met her husband and consider her my best friend. We both got married relatively young (we’re both 22) and our husbands are good friends now too. The four of us hang out often, and sometimes just me and her will hang out or just our husbands will. I’ve always thought she was the hotter of the two of us – light brown bordering blonde hair, dark brown eyes, and an amazing body. She’s a perfect hourglass whereas I have more butt than boobs, but both of us have relatively small waists. If you missed my last story, I have long, dark hair and green eyes, with C cup breasts and a plump ass.