Sounds like you’re considering it, otherwise you wouldn't have asked the question. ;)
Let talk briefly about the "in love" comment that you made...
That feeling of being "in love" is actually a chemical release in your brain that eventually wears off.
At that point, "love" becomes a choice, an unconditional acceptance, of your partner. It's a daily decision to be with that person and to accept them for who they are today. That's just our definition of "love"
Now that I've gotten that off my chest...
This sounds like an emotional disaster waiting to happen. I wouldn’t do it unless you are completely comfortable and secure with yourself and the relationship with your es husband – absolutely no jealousy, anger, resentment, etc.
And only then...
If it's something you want to try, go for it!