The 5 Love Languages by Gary Chapman
This is one of my favorite books to recommend to couples seeking counseling for relationship issues. It is simple to follow and read, and gives great examples in each section of how to speak your partner’s love language.
This is particularly helpful for those who speak different love languages because it is not intuitive to us to know how best to speak a language that we don’t relate to from our own perspective.
During this time where we're staying inside and spending a lot of time together, it's good to know how best to relate to our partner.