Most Helpful Guy
Wanna make a SIGNIFICANT impression in his eyes? To where it "almost" forces him to make a reaction? Simple -> Improve yourself even more.
Dress up / Style your hair / Take a comedy class / Work harder for that promo at work / etc.. Eventually news will sift underneath his nose and he's gonna come across the memories of you back then - he's gonna then think: "Maybe I should get in touch with her" (exceptions, I'll explain below).. And at that point, he's gonna be the man he ought to be - in which, he's gonna start trying harder to get your attention.
The exceptions I mentioned above: If you broke his heart, if you f***ed his best friend, etc.. Those "Extremes" which make the memory of you unpleasant rather than pleasant.. But if he's neutral with you, or has a positive image about you, then he's gonna think about you in this type of scenario.
And if your wanting faster results -> you can speed it up by "interacting with him".. meaning:
- Add him on Facebook (Zzzzzz boring..)
- Go to where he works and catch up like normal (once a week?)
- Start hanging out with his friends, or make plans with his friends for a "double date"?