29f first time being shared

I had only ever been with my husband. We met freshman year of college but I love sex and riding and having had a healthy collection of dildos since before I met him. I have always been proud of my skills in bed really using my toys and husband to learn how to do all the work in every position but because of my big ass riding and doggy I would say are my specialty lol. Anyway classic sexual adventure story close friends backyard pool hot tub drinking and the conversation turned sexual. My husband was bragging about how incredible I was and his friend called him out and said bullshit y'all have only ever been with each other how could it possibly be that good and how would you even actually know. I'm super competitive and more so when I'm drunk. I looked at my husband and said I think I should prove it my husband smiled and said are you sure we've never even talked about this. I said I just want to shut him up it will only be once and then he will always remember what he can never have. My husband said damn okay. I looked at his friend with everyone around and said I'm going to give you one minute inside me of me doing all the work and then you'll never get anything this good again for the rest of your life. My husband said oh I thought you meant you would let him watch us. I just said no and pulled his friends dick out. Luckily it was nice very similar to my husband same ish length 7.5 maybe a little bit longer and really thick definitely thicker than my husband. I made him lay back I stranded him reverse cowgirl. I was having trouble fitting him inside me so I said your minute starts once I've worked you inside me all the way. Everyone was completely silent as I slowly worked up and down his shaft fitting him inside me. He was twitching and breathing heavily once I was like halfway down him it took a couple minutes to take his full length. Once I was sitting with him completely inside me I said I hope you do your best to remember what is about to happen and I started riding him. He immediately started moaning and I could feel him getting even harder and growing a little bit inside me. I was glad he was a good size so I could really give him good long strokes and clap my ass in his face. After about 30 seconds his breathing got really fast I felt his hole body tense up and then a couple seconds later I felt a sudden rush of hot liquid flooding my insides and gushing out of me. I kept fucking him and said are fucking cumming right now and he just said sorry as I felt his cock twitching and more hot liquid impact my cervix in long gushes. I pulled off of him and looked between my legs as I did watching a huge thick white glob of his cum falling out of me onto his still hard cock then sliding down his balls and onto the ground. I looked up and saw e everyone just staring. I sort of suddenly felt like a slut and maybe a little cheap. Then one of the wives said let's do a shot. Everyone cheered and we took a shot. It was a little awkward for a bit after that but it only took about 10 minutes for everyone to stop being weird and start joking and talking about my body and skills. My husband said well let's never do that again but it was pretty hot so maybe just for tonight.