I am dating this guy (we are both at the end of our master studies).
He definitely takes care for himself: Clean place, intact circle of friends, no junk food, competes in hobbyist Judo, no excessive partying. He has all in all a healthy lifestyle.
The thing is he has no social media: No insta or facebook. If you google him you can finder older articles about him when he competed in sports. Via WhatsApp he is almost always reachable. He also phones with me.
Is it a red flag for you if a guy has no social media in his mid-twenties?