Dd (y1) plays with child X quite a bit at school.
I recently observed how they interacted at a party they were at together. I was pretty shocked at X's behaviour towards dd. Constant touching, putting arm round dd, dragging her off from other friends who wanted to play with her, trying to kiss her, sitting so close to her she was practically squashed. I asked X to let go of dd many times so she could enjoy the party properly. X refused to let go of her - I had no option but to step back as X's parents weren't there, and unless I physically dragged X off her (which I wasn't prepared to do) I couldn't stop this behaviour.
Several times, X went right up to dd, and stared right into her eyes.
Talked to dd afterwards to find out if this happens at school at all. It seems it does - not all the time, but certainly sometimes in the playground. I've not really had much experience of dealing with this kind of thing - I'm really unhappy with this, as I feel dd should be able to play free of harassment, but dd is still playing with this 'friend'. Should I advise her to stay clear? i am going to talk to her teacher to see if she's observed it at school, and to suggest ways to stop it.