Sometimes passion happens and momentarily kills our brain cells. Remember dating can cause temporary insanity and make you lose perspective. So, now that you know you can be more conscious. Be approachable and look like you are approachable. Don't just be approachable in your mind and heart.
Most men are visual.
You have to give them clues, just in case they forgot to take their ESP pills that day. This is what you do. Look at him, smile, and be inviting. Be authentic and for real. Guys always have their trolling for women radar on to see if they are in friendly or enemy territory.