The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at the Trope Launch Pad.
RobertTYL
Since: Oct, 2019
Florestan
Since: May, 2015
ThrawnCA
Since: Jan, 2018

I've looked at Envy and Jealousy Tropes, but I'm not sure what's the best match for seeing your crush stroke a pet that's on their lap, and feeling jealous of the pet.