Need to find these books

[Cassandra]

1st: The main characters are Lee, and Julian. They are divorce. Julian’s son (I remember that the son calls Lee a mermaid) is kidnapped and it brings together to look for him. After finding him they go on vacation to a beach were eventually Julian and Lee come together. I also remember that Lee had a boss named Eric is this books who was quite older than her.

2nd: I don't remember any names for this one but I remember the situation. A young woman has rented out a boat in the Amazon to find her father after the death of her mother. She ends up making love to the captain of the boat, while looking for her father. She also finds her father but he is with another woman (the woman is pregnant)

[crazy1bad]

Cassandra wrote: "1st: The main characters are Lee, and Julian. They are divorce. Julian’s son (I remember that the son calls Lee a mermaid) is kidnapped and it brings together to look for him. After finding him the..."

2nd one: reminds me of Jungle Island but it doesn't really fit

[Cassandra]

I don't think that is the book that I am looking for. Thank you for trying to help!