Just be honest and set any ground rules ahead of time and make sure all 3 parties are on the same boat. It's fun if done right. I've been a third before and also shared a GF on several occassions.

I may not be very much help, but my husband and I just did something SIMILAR. I say similar, because yes, it was a threesome of sorts, but no actual sex with the third person. We did mfm, with his best friend. I only had sex with my husband, but the third & my husband pkayed with toys on me together. I know they say doing things like this with a friend is a bad idea, but I think it really depends on the dynamics of the friendship. My hsband and I didn't have any hard feelings the next morning, and so far we are still all great friends with the third. Since that went smoothly, we actually just last night had a conversation about taking it further & our expectations, wants, and rules for that. A big part of it for me, is being fully aware that feelings couls form, but being in complete control of that emotion. Just always keep in mind it is only sex. It seems that you have that part worked out though. So, anyways, just make sure you all are very open in conversation & you trust everyone to follow the rules etc. Have fun!! We had a good time, and hopefully you will too!

haha ive been in so many honestly theyre so weird and confusing: just like all sex ! sometimes its really hot but mostly it's ok and funny but i get bored.

Good luck in whatever you and your partner decide. If you both feel comfortable doing it than why not go for it! You only live once anyway. However, my advice is to make sure everyone is comfortable. You don’t want to ruin relationships if it doesn't work out.

In my experience, the most important element of a threesome is setting boundaries before hand, and sticking to them, even in the heat of the moment. It's a great idea to start slow with your first experience rather than jump right in - and move forward as you are comfortable. Start with touching and kissing.... then the next time, try some penetrative play... eventually moving up to sex. Going at a slower pace will help you both determine if it's the right choice, with less regrets if it ends up being wrong for you!