My wife and I opened our marriage to a third a few months ago. They've been living with us temporarily while they look for an apartment in the area. We have threesomes pretty regularly. It's pretty amazing right now.
Like many people with ADHD my interests change every few weeks/months... I've been saying my technical muse left and my erotic muse has returned. I've began doing a few erotic roleplays online again. I got really into this hobby about a year ago but stopped around the time I got a job. (I had a lot of free time for a few months lol.) It's been fun!
I'm really trying to pace myself. I took on way too many partners last time. At times I had maybe a dozen going at once. I got caught in this loop where when I was done writing replies and I wanted to keep writing I'd look for new partners. Over time the hobby stopped being something fun and became an obligation I dreaded doing. So I stopped. I'm trying to avoid that this time. Only take on maybe three maximum at a time. If even.