2, 5, 45 for Stanislaw and Lyudmila :D
We are the only ones who know who these people are but who cares XD
2 .What was their first date like? If they haven’t been on a date yet, how would it go?
So I'm sure it was only after Stanislaw's resurrection but before he left to travel with 3 Bohatyrs. Maybe it had something to do with music? It probably wasn't anything big, but maybe Stanislaw played her some bandura (she finally heard him play alive :')) and they definitely talked, maybe she also confessed how much she's missed him during that year, and I imagine that only after this date they started calling each other by the informal you.
5. What’s their love language like? Are they compatible with one another?
Hmmm Lyudmila's is probably quality time, and Stanislaw's... maybe words of affirmation? I'm not an expert in this aspect x)
45. Are they good at comforting one another? Does someone hide their feelings usually?
I suppose both of them might have kind of hard time expressing their feelings sometimes, Stanislaw because he was brought up to be "tough" and "independent" and that showing emotions is a weakness, and Lyudmila because she was taught how to hide her true feelings for politics and once she became knyaz she especially had to watch herself. But they're definitely good at comforting each other, they went through a lot together and have always supported each other, so they definitely can.
I love this duo of ours 💙
And thank your for the ask Amuel XD