There is a condition called aberrant regeneration. It is relatively common with the facial nerve. Sometimes, when the facial nerve is injured (from infection like shingles or inflammation like Bell's Palsy), it regenerates by sending abnormal linkage to different muscle groups. The same nerve then will affect muscles that are different that those it affected before the injury. The facial nerves seems very prone to this. There is even one phenomenon so common that it has a name (called Marcus Gunn Jaw Winking). This occurs when you chew, the eyelid winks. This sounds similar to what you have.
There is really no cure other than extensive surgery to separate the abnormal strands of nerves (without damaging them). Some have tried nerve medications to only mild success.
I hope this helps and thank you.