The blonde girlfriend

E-mail conversation. He says:

- I like you very much and my blonde girlfriens as well.
- Isn't she jealowsly?
- No, she isn't. We have an open relationship.
- She looks be a nice girlfriend. I want one girlfriend of this kind too.
- Sure. She doesn't cost much. You can buy 2 for 0,99$
- Is she kosher?
- Kosher parve.