I'm going to call out a trans person on being overly sensitive
What made you think that this trans person was being sensitive?
I made a comment about their partner and they got all upset about it.
You may not find your comment offensive, but it's possible that it is, you shouldn't say it. It's rude to comment on people's partners.
I love to test out people's tempers.
It's not okay to upset people on purpose. It's going to be really hard for you to establish relationships with people if you behave that way.