my friend recently went on a beach vacation and i really was ready to go on vacation myself. she had already been several times that year so i begrudged her vacation a bit.
being jealous of another person is a perfectly fine response. despite this, you never know what is going on behind the scenes, she may have taken out huge loans just to fund her trips.
a little while ago, my friend went on another beach vacation. it was her rd one for the year. my family and i had not been on vacation for several years, due to issues beyond our control, so i begrudged her trip a bit.