Lisa is so low key with her idol friends, we don't even know she's friends with them unless they mention it. She seems very good at keeping secrets, or staying on the down low.
But among her male idol friends, she seems closest to her Thai line friends, Bam Bam and Ten. Bang Chan randomly said he had been friends with her for a long time, I think they would be cute with each other, lol.
I see her with a tall, older guy, that's just me.