I'm so sorry yo have to put up with this, TeaFruit I have to admit I didn't understand some things. However, from what you wrote, I'd agree that he sounds like a toxic friend. He sounds manipulative and controlling. Trying to make you leave your partner is already a HUGE red flag by itself and should be more than enough. And no, it's not normal for a friend to make a threat like that. I'd definitely cut off contacts with him as soon as you can. I'm so sorry, I know it's hard. Remember that we're here for you. Feel free to PM me anytime. Let me know if I can do something to help you. Wish you good luck! Let us know how it goes. Sending many hugs to you