Jumping to Conclusions and/or Overreacting
When you jump to conclusions or overreact with people or situations oftentimes you shoot yourself in the foot. Especially when you are dealing with another person. People are so very complex and we are looking at them through our own lens so things can get very convoluted in the process.
The best way to handle this is to not give yourself up, but rather to state your truth in a calm way (we'll keep our fingers crossed you can get there), not blaming the other one but looking for understanding. Checking it out first with your partner/friend/parent/child, etc to see where they are coming from gives you more understanding so that you can then make an educated decision on where you want to take it.
You may like their answers or you may not; they may lie, they may twist the truth or they could give you a different picture of something that you hadn't thought of. Take a deep breath and remember -- it's all about communication!