He'd probably talk about how close they were as childhood friends, and that they have quite a few things in common. Also - just a guess - but maybe he likes a 雌ライオン, ライオネス that knows how to fight and pin someone down when she needs to! :D
He'd probably say something like this " Whenever I look at Nala I see a beautiful, smart, loyal and strong 雌ライオン, ライオネス who makes my ハート, 心 sing. Sometimes she is wild. Sometimes she is reasonable. She always helps talk me straight when I'm on the wrong path. She was my childhood friend. Today she is my Queen. I am so glad I have her. I couldn't live my life without her. That's what I see."