Threesome

Hey everyone just a quick question so I’m 26 and me and my spouse has been together since we were 16 so 10 1/2 years later and 3kids 😂 I was just wondering is a 3 some good for a long term relationship we both have never done it before but are curious about it 😩sn: I’m that that experienced sexual I’ve only been with 2 people before him