1. Ignore them
Not only does this certify just how big an asshole you are, it also makes the other person feel ‘ye high.
2. Lie to them
Say crap you neither mean nor care about. Make up shit. Nothing says ‘Eff Yew’ than making someone feel like they weren’t worth the truth.
3. Be needy like the bitch you actually are
Yep, pester the other person, make big-big eyes at them, behave like a total buttwad.
Finally, just to seal the deal, do (3.) and then (1.) Follow with (2.) You pull this off (Frankly, not that hard to do) and you, my friend, have hurt and irritated a perfectly nice individual for whatever reason. If you’re feeling bad, do what you do best – (1.).
The concerned party probably hates you by now, anyway. So, do yourself a favor and kick yourself in the ass.