10 year old neighbor boy macking on my 5 and 4 year old daughters

So the neighbors moved in. No big D. They have a ton of little kids coming and going. No big D.Little 10 year old boy tells our 5 year old girl that he wants to kiss her, but not the 4 year old. No, the 4 year old he would rather watch swim. Red flags all up and down.My spouse, the girls' father, is outside hanging up lights yesterday. The 10 year old boy comes up to the fence to show our daughter something on his phone, but once he sees father standing nearby, he changes his mind and goes back inside. Neon crimson flashing scary "This kid knew he was about to do something wrong" flags all over the place.So we've felt the need to tell our girls that they are too young to be kissing other kids, they can kiss each other and family because we're family, but making out with neighbor boys at AGE FIVE is not in the cards for them. Blessedly, they are oblivious, but how can we address this before it gets out of hand, and we have to do something we'll regret, like tell the kid to back off, or tell his dad to control his son?Um, what the hell? How do we appropriately and inoffensively tell this kid that he needs to stop flirting with our toddler? She has long legs and looks like she could be 7 or 8, but we've made it very obvious that she's still a SMALL child. What do we do, as parents? via /r/Parenting https://ift.tt/2IBqDpn