Only you can decide if this is right or wrong for you. You need to carefully consider any problems that may occur from doing this:
-Your husband could decide that he wants to continue having threesomes.
-He could decide he wants to try a threesome with a man next time.
-You could become jealous of his interaction with another woman.
-The other woman could become pregnant or give either of you a disease.
-Your husband could develop an attachment to the woman and begin an affair with her.

You also need to know beforehand whether or not you are secure enough to share your husband with another woman. Is this something that would make or break your marriage?

On the upside, this could have some positive benefits to your marriage:
-It could bring you closer together.
-It could spice up your love life.
-It could rock your husband's world and be the perfect gift for him.

Personally, I don't think couples should have threesomes. I think the possible disadvantages outweigh the benefits of a threesome.
Good luck with whatever you decide.

I would like to say, you know best whether it's right or wrong for you as said by deteragram . Ask your conscience and you will get the answer. Personally, if I were you, I wouldn't but I am not giving any judgment over here, the final choice is yours.

I say heck no.. If hubby has not asked for this in the 1 year you been married, why open up a can of worms?
There are other gifts you can give him.
It's not all about pleasing hubby, it's your anniversary too. Go get yourself a pretty nightie,some massage oil and use your imagination

My husband and I always fantasize about having another woman in bed to spice things up...A cpl months ago I ran into my sisters (Bisexual) friend that I have known for years, and I could tell she wanted me! So I told my husband and he was like well have your sister and her come to spend the night! so I did and the night before we were so turned on all night at the thought of it that we made GREAT love all night long...The nxt night when they came over my sister fell asleep and I told casey "Lets go take a bubble bath!" So we did with candles...When my husband walked in he was so turned on and we all started making out and went to the bedroom. Me and Casey were all over eachother...(I was trying to arouse him and she was REALLY just into me) LOL..But I kid you not, My husband could not get hard at all!!! We even gave him a bj together and NOTHING! Finally he gave up and told Casey "Im sorry I just cant get hard, I cant have sex with anyone other than my wife!!!! She was like "Awwww" and I was like "Awww" LOL He told her that she was very attractive but he just couldnt do it! So I mean I dont know but it could be a good thing!

if youre having doubts about this then NO..do not do it...bc it will cause problems and you'll regret it..only do this if youre 100% certain it will only benefit the relationship...but remember that it could also cause jealousy and insecurity...I know for ME personally..it would absolutely KILL me to see my man even TOUCHING another woman...I dont share..period...but if you think you're up for it..then just make sure you've layed down some ground rules

Hi i'm in my fourties & i detest the idea & i believe if he really loves you it will be about you & him & nothing else.If not then why put youraself through the pain ,guilt & suffering of what will follow. Cherish what you have togeather & let history be history!

i personally would never allow another girl in our bedroom. It's sacred ground to me. Plus it would hurt ME to see him enjoying someone else.

I could never do it and the way you seem to be doubting it is probably your mind saying no. Guys are capable of having only one partner. Mine wants me and only me.

If you decide to go through with it then I wish you luck. But I would have too many doubts about it like.. what if he likes her more..and whether or not he would want to date her, or what if he wants this to become a permanent thing.

You can do something else for your anniversary
play alittle bondage.. getting hands tied and a blindfold on you is A LOT of fun.. and since he seems a bit kinky if you haven't then pull out a video camera.

My best friend asked me to have a threesome with her and her husband a couple years ago. He was always working and I really hadn't spent much time around him, but I agreed. Turns out, this was actually a last stitch effort on her part to save her marriage. She regretted giving him that experience when it did not change his behavior towards her at all, which was the desired result. I love her to death, and wish she had been more open about their problems beforehand so I could have said no. They are divorced now. I am not sure this would be a great idea. Men always want more.... as did her husband. I agree with the video camera idea!