My first piece of advice to those wishing to join the world of cuckold or wife sharing is be sure you it's what you really want.
The main thing is to make sure your marriage or relationship stays intact.
If you have any real doubts, don't do anything until your sure. Start off slow.
Make sure the wife wants to do it. In my early days when I was playing solo online, the 1st couple I met was all about the husband.
The wife told me quietly on our 1st meeting that she wasn't into it but he'd be angry if I told him what she said.
To cut it short, I fucked her many times and when I told her that I'd tell him I had a new partner ( a lie) and couldn't meet up anymore she asked me if I'd keep fucking her or he'd just find someone else. Needless to say they are no longer together.
Men, be prepared for the fact that she will like fucking other men more than you. Forbidden cock feels very naughty and more exciting. If you can't live with that, don't do it.
A friend once told me that he'd love to try a MFM with his wife but he's worried she'd like the other guy more. I told him "of course she will, that's the whole idea. Stolen fruit, fresh meat, she'll enjoy every inch of his cock' but she'll love you for giving her the pleasure.
Women, if it makes you feel dirty in a bad way. Don't do it.
If you are both comfortable in your relationship and you both want to please the each other, it's an amazing and satisfying lifestyle. Win, win.
Jealousy can add to the excitement or ...... the relationship. Make sure it's the former.