Is it normal to be jealous of a girls lesbian best friend?
My girlfriends best friend isn't really a lesbian, but she is bisexual and has a huge crush on her. Is it normal for me to be jealous of her? She sends her messages like, if you ever want me to eat you out or have sexual frustrations then call me. I hate it and I want to hit her friend. I told my girlfriend if she ever did anything it would have to be a threesome. If I am not involved I consider it cheating. IIN? Advice?