I have the want to bring a third into the bedroom, but want a little more advice on the outcomes - pros and cons

Hi, so my husband (25 male) and I (24 female) were talking about inviting a third (female) into our bedroom.

Yes, it was my idea and I was the first and only one to ever bring this topic up.

I am not into females, but the thought of him pleasuring another female does turn me on a bit and of course he’s totally down for it. I want to think that it won’t cause any issues, since we have both discussed our feelings very openly towards this topic, but I want to know. Would bringing in a third have any effects on our relationship?

If you have been in my position or have experience bringing in a third, what was your experience like? How did it effect your relationship afterwards? Pros and cons?

*p.s. I am the only person my husband has ever been with and we do have a 10 month baby as well.*