I can only orgasm with a knife to my throat
I'm into BDSM and me and my boyfriend do this thing where he role plays as a serial killer and I'm his victim. He will 'break into' my house and then have rough sex with me as he holds a knife to my throat and describes how he will kill me or he will choke me until I pass out while he describes how he wants to fuck my dead, lifeless body.
We sometimes have vanilla sex but I don't enjoy it nearly as much. Is it normal that this is the only way I can get off?