How do people separate emotional jealousy from sexual excitement about their partner being with someone else?

I’m trying to understand a distinction I notice in myself more clearly. Writing this openly.

On the emotional side I’m clear:
I don’t want my partner to fall in love with someone else, get emotionally attached, or have another person take a real place in her heart. Romantic attention, flirting, private messages, or someone saying “I’ve been thinking about you” would bother me a lot. That kind of emotional closeness creates jealousy for me.

On the sexual side it’s different.
The idea of my partner having sex with someone else feels exciting rather than painful. I don’t experience it as betrayal or humiliation. It feels more like a different kind of intense sexual energy. I’ve noticed the same reaction when watching content with that dynamic.

Recently I was talking to a male friend and half-jokingly said something like “should we sleep with my girlfriend together?” Nothing happened after that, but the conversation stayed in my mind. Emotionally the idea of someone else loving her feels bad, while sexually the idea of her being with someone else (or even a shared experience) feels more acceptable and even appealing.

I separate the two things:

• Emotional attachment and love → jealousy, I don’t want it
• Purely sexual experience → different reaction

I’m not trying to convince anyone or defend a position. I just want to understand how other people experience (or don’t experience) this split between emotional jealousy and sexual response.

How do you personally separate these two things, if you do at all?
What shapes the way you react to this kind of idea?