Suga is saying "keep your fourth finger empty, because i'll be proposing to you"  

*smirks*

Meanwhile...

Jin: "Keep your cooking pot empty, because I'll be cooking for you."

*was walking towards your kitchen while wearing an apron*

Rapmon: "Keep your things away from me, because I'm accident prone. I dont want you to cry girl."

*scratches nap while looking concerned and anxious*

JHope: "Keep your lonely face, because I'll be making you smile."

*starts screaming*

V: "Keep your freak on, because we'll be turning up and be HAVING A PARTY!!!"

*crouching on the side while choosing a music to play*

Jungkook: "Keep your standards high, because, you'll die single."

*laughing like a savage*

Jimin: "Keep that legs close, because I'm the only one who'll open them for you."

*smirking lip bites while staring at you intensely, walkin*

Suga: why is everyone so weird today?

*squints confusingly*