One partner, I am realizing, doesn't fulfill all of my personality needs. We have great communications, but there are aspects that as missing as our life continues together.
Being silly, laughing, and not talking everything so serious, that does NOT mean to be a foolish all the time; there needs to be the right time, right place, and right audience. I'm retired from the military, but don't have a military personality. I am a grad-student working on my MS; I have the summer off.