Moving to a new savegame is the only non-mod solution I can think of (as stated above)
(or simply not getting married)
Was either of the Sim in a previous relationship ?
Yes, he was, but I had him end that relationship long ago.
They can't get past "romantic interest".
The game sometimes does not clean up old relationships properly, preventing the option to show up (that's a bug of course)
What's the icon on that relationship ? Does it properly show as ex-boy (or girl) friend ?
Unfortunately, I don't really know of a solution for this that does not involve a mod except moving both Sims to a new savegame. You should loose all relationship this way but I don't know if that's desireable for you.
She is listed only as an acquaintance.
They now have 6 kids and still can't even get engaged.
Moving to a new savegame is the only non-mod solution I can think of (as stated above)
(or simply not getting married)
