@Itsme, I get it. I had a few dates with an ESI-Se who was e6 and so/sp. I got along with her very well, she was attractive and wanted to have kids, which for me is perfect, and she was totally focused on her social contacts which, along with her being sx-last, was a deal-breaker.
My ex-wife is an sx-last. I'm not doing that again for anything.
In your case, if you can't trust her to fuck only you, then you should walk.