Boy/Girl friendships

My kids are getting older and I've had talks with them about relationships and how to treat their partners along with how they should be treated. My daughter is 17 almost 18 and she's not really dating, however my 16 year old got a girlfriend. They've been dating a couple months. My 16 year old also has a female best friend named Hailey. I like Hailey. Her and my son have been friends since 3rd grade. I just wonder something. He talks to Hailey Daily. They FaceTime a lot. He's really hyperfixated(super Adhd on hot chocolate and his nightly routine is to make hot chocolate and FaceTime with Hailey for an hour where they talk about random stuff. They both play fortnight so it's usually that and internet drama. I just think if I was dating a guy and his routine was to chat with his girl best friend for an hour every night I'm not sure I would like that. On one hand I am happy he's still being a kid and just talking to his friend. On the other he has a girlfriend now so should I have a talk with him about it?