God is a person. One God is one person. A trinity is three persons in one person.
"when we say "God is Love" we are asserting that God is more than one person. For love is between persons.
God is not love. Love is a verb, an action, and God is a noun.
"But why three persons? This is because God the Father and God the Son love one another: and the Love between them is itself fully God: the Third Person of the Trinity whom we call the Holy Spirit. This incidentally is why the Creed says that the Holy Spirit "proceeds from the Father and from the Son""
Any real instance of a person requires a body. That's the machinery that provides for the functions of the person. The person however is machine independent. That means that the particulars of person, or self, do not depend on the machinery. The machinery only provides for the functionality of a real instance of the person. In the case of the particular Trinity that is the person God, the Holy Spirit is the machine independent person, which is the same and is common to the Father and the Son. It is the same with God's Image and likeness Man, male and female, except in those instances of trinity, the spirit os not called Holy.
Of course one must love themselves, before they can love any other.
Hmmm, let's see. God's Word says that God is love. You say He's not.
Who am I going to believe here?
God? Or an anonymous internet armchair theologian?
1 John 4:8 Anyone who does not love does not know God, because God is love.
Galatians 5:22-23 But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law.