u/JumpyAnt6424

I live in a big shared house and my partner comes to visit me here and there. Lately I been noticing this - my flatmate who already got a boyfriend and lives with him btw she is standing behind my partner when he is washing dishes and just ltrly staring at him while he was doing dishes. He asked dya need smthn? She is like no and stayed there and kept watching. I feel like this is soooo weird and actually makes one rly rly uncomfortable. Should I say smthn to her or maybe her bf who can put some sense into her ?