You need tothink about his carefully.
I NEVER sleep with someone from work!!
( OK, I did once, no... twice, well maybe seven or eight times, but NO MORE)
It can lead to serious problems in becoming sexually involved with a co-worker, especially in a WTW relationship ( woman-to-woman)
These office relationships are still not accepted very well.
Also, you are assuming that she would be interested in your hubby sexually. ( if you are thinking of a 3 sum)
If you only want to experiment, and have NO THOUGHT of either having a 3sum, or leaving your hubby, then go have a drink with her, and share with her what you have said here.
She may not be interested in sharing this experience with you. Don't take offence if she doesn't want to do this, she might be looking for a permanent relationship, and not interested in doing this.

Wickedly

Wanda

__________________
"I wondered, am I a lesbian, am I straight, or bisexual? Then I realized that I am just a slut.
So where's MY parade?"

---Margaret Cho