Has anyone done this? Need advice!

I'm 30, on my way to getting engaged, but can't shake my curiosity about being with a woman. Regret not experimenting more in college. Was too nervous to make the first move, even though I've had several opportunities 🙈

I've heard of some women who get consent from their boyfriend/husband to explore a bit. (PS I understand some people don't want to be an "experiment" and I get that ... I would only do this with someone who knows my situation and is OK with just having a good time.)

I don't want to cheat on my bf but also dont want to wonder for the rest of my life.

Thoughts?