3. He is “super busy” all the time
If he likes you, then he’ll make a real effort to see you as much as possible. If he keeps fobbing you off with shit excuses then you’re better off moving on and finding someone a bit more attentive.
4. Your friends seriously disapprove
Your friends know you better than anyone, so if they don’t like him then you seriously need to start asking yourself questions about whether he’s the right one for you.