Mercury is the planet of communication, short distance travel, technology, expression, information processing and coordination, so all of these things go haywire when the planet is retrograde.
Mercury is in Aquarius right now so the humanitarian and quirky spirit of Aquarius is fuelling the atmosphere.
This means that communication issues may actually be down to the typical aloof nature of Aquarius, and we may simply not feel like socialising.
Mercury retrograde is starting at the tail end of Venus retrograde, so we’re going to be waking up to our limiting beliefs and what we really want in our relationships.
Generally, though, Mercury is quite happy in Aquarius other than the anxiety that comes with retrograde.