I think we’re ready but wife is unsure

Firstly- I’m not sure I’m posting in the correct sub - apologies if I’m not and pointers on the right direction appreciated.

About us - we’ve been married 15 years and I’d say we’re good commutators and honest with each other. Wife has a lot more experience than me before we met which I have always enjoyed hearing about and have role played others joining us on the bedroom but never with a view to anything more. Lately I have been cumming earlier than usual, I know it can be frustrating for her but she says it’s not a big deal. It has however made me think more about her sleeping with someone else.

Someone important points- I’ve no interest in being with another woman. I’m also not into humiliation (which makes me think I may be in the wrong sub), and have no interest in watching her - but the idea of hearing about it and reclaiming does turn me on.

When I told her I wanted her to move from role play to reality she was hesitant. She had a threesome with an ex boyfriend which ended up with them splitting- he became paranoid and jealous- and she pretty much decided that she would never bring anyone else into the bedroom. She did however admit that she enjoyed the experience and also has said the thought of hooking up with a stranger does excite her.

I’ve explained that I’m not the same as her ex- I can genuinely say I’m not the jealous type at all. My main motivator is her pleasure and I’ve told her that. I really feel I’m ready for this - albeit I have a few things that I would need assurance on , no contact with the guy afterwards for example.

She is going on a girls holiday in a few week and, to me, this would be a perfect time.

So a few questions- do I push this, have any of you thought you were ready and then found out you weren’t, are there any other things that I need to take into account??

Thanks