Sidhe,
Love is not smiling as your loved one steps out in front of a fast moving truck. Love is not allowing someone to believe in a lie because they like the lie they believe in.
Love is the truth.
And the truth is, God does not share His throne, nor does He tolerate people worshipping anyone other than God.
As to the verse. Don't twist scripture. The bible is clear. The greatest commandment is to love God with all your heart, all your soul and all your mind.
The second-greatest is love your neighbor.
However, you cannot love God with all you are if you split your devotion between God and your celtic dieties.
That you do not like the truth does not make telling you the truth unloving. What you are doing is sinful. Pure and simple.
There is not a SINGLE SOLITARY verse in the bible that supports the position that God approves of the worship of anyone or anything other than God the Father, God the Son and God the Holy Spirit. Yet you continue to spread that lie.
And worse you spread it to defend a religion you and the entire world knows is man-made by a man who is dead in his sin.