There is nothing wrong with being called a Jesus fanatic. It just means that your love for the Lord is showing.
John 3:20,21 (KJV)
20 For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved.
21 But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.