I was talking with a client about resentment a while back, and we explored how it can creep in unnoticed and then blindside us. Resentment creates a false sense of righteousness, which inevitably leads to more disconnection. That means: you cannot have an intimate relationship with someone you resent.
Unfortunately, unaddressed resentment will always grow. So, it’s even more important to develop an awareness to it and not just brush things under the rug.