Hi all,looking for some advice.My 14 year old daughter has a best friend the same age,and her friend has a step dad(30s or 40s)who behaves quite immaturely for his age.He and my daughter are messaging on Snapchat,which we only found out the other day when she told my wife.She sent him a selfie,and he messaged back that she was gorgeous.She then messaged him saying love you,and he said love you too.We obviously know this is inappropriate,but we are searching for the right approach to not push her closer to him,while preventing this going further.Any advice welcome!