Some tips to remove annoyance caused by some fella u don't like
lol 
The 4 immeasurables - if it's too difficult for you, simply
ignore him/her lol
http://www.accesstoinsight.org/tipitaka/an/an05/an05.161.nymo.html
"The forgetting and ignoring
of a person with whom you are annoyed can be practiced; this too is
how annoyance with him can be removed.