<human>: Give me a shortened version of the text

My boyfriend recently informed me that one of his female friends who is in an open relationship wants to have sex with him before she gets married.
 Nothing against her life style, but I am very possessive sexualy and didn't appreciate her coming on to him. He told me I don't need to worry because she isn't attractive, but won't tell me who she is. 
I understand he is probably worried I'll instantly dislike her, but I'm honestly more concerned that his reason for saying no it's that she was unattractive, not because he is taken. Am I over reacting here it should I be concerned?
<bot>: Unknown female friend told my boyfriend she wants to fuck him. He doesn't understand why this worries me as she isn't attractive anyways.