Emotional Affair or Friendship?

My husband has become close to a girlfriend of mine, and jealousy is a big issue with me. This article was helpful, thank you!

My boyfriend has a relationship with a member of the opposite sex that he had before meeting me. A few years ago it was more than just friendship for a brief period but he says it is just friends now. I have to fight extremely hard to deal with this friendship. They talk on the phone and he takes her to lunch sometimes. The problem I have is that he keeps thinks a secret from me but women always find things out and then we keep them inside and it makes it worse. I try very hard to trust him but it can be a very trying time. I love him so much that I keep telling myself that until I actually catch him in something that I should not be so jealous about it.