Open marriage

Have any of you ever considered a open marriage I have been thinking about this for a while now. I am 23 so is my husband. We have two kids and even tho I'm happy. I'm not fully happy I wanna experience whats out there and have fun. I have talked to my husband about a open marriage jokingly he always say no it wouldn't work we are both jealous people. Which that is true but I still wanna see if It would work out. No my kids wouldn't know anything about what we are doing. I just need advice because I am so young and I wanna experience and see more in the world and not be the person i am not. After having my first child I lot myself. My husband and i wasn't supposed to be in a serious relationship until I found i was pregnant he's in the military so our whole family was telling us we had to get married and we did just that even tho I don't eanna be married. We've been married for 4 years and I just dont think I can hold on any longer.