Vlad can't propose

My weird game strikes again. I'm ready for Vlad to propose to Callia, but the option is greyed out and it says their friendship isn't high enough to propose. Their friendship is about 50% in the red, their romance is maxed out. But here's the strange thing, the relationship panel says they're lovers. Unless I'm mistaken shouldn't that be hot and cold or enemies with benefits instead? Is that possibly why he can't propose? I've never had a relationship get into this territory so this is uncharted waters for me.

I was curious if there was a work around to get Vlad to take a knee and propose so I can see what crazy Callia does, or am I just going to have to cheat it? I'm not above using a cheat but I want to see if this proposal goes sideways or not. For the record I have a vanilla install atm. My entire mods folder got pulled so I could test my gardening issues. I was kind of hoping it would fix this too, but no such luck.