Actually,Charlie loves Bella too.

Bella was Evie's little sister. He would help in any way he could. He would be involved but in a practical sense only. This was one woman who was safe from his advances. Not because she was unattractive, far from it, her auburn hair, pale skin and grey eyes were a mesmerizing combination, but Bella was Evie's little sister, which meant she was practically family and she was definitely off limits. But he could offer support, he knew they would need it, and that would be the extent of his involvement. She was Evie's little sister and he would be wise to remember that.