Jimmy,

I was answering having already been there, what seems now like many years ago, about 10 now it seems. I would have to say that I was not secure in my relationship back then, but even so am happy to have had the experience, even with being left aside on the subsequent occasions and having had them get together without me.
Now totally secure in my relationship I would be cool with it, just that the kids might make it hard these days LOL!
The problem is too many people mistake sex for love. The rules I was talking about wasn’t for the act itself but for way it is approached. You have to be cool with how it is going to impact your initial relationship to get into the craziness I reckon.