I need help

I don't know what to do anymore I'm in a long distance relationship with my boyfriend but I just want him with me all the time to the point I fantasise about kidnapping him shoving him in the trunk of my car and driving off I don't care ill frame my missing as a kidnapping too I don't care who I leave behind I just want him. The idea of him just thinking of something other then me makes me lose my mind. Knowing that he wakes up and doesn't see me straight away makes me want to kms. I just want to rip his skin off and live in him and if he even glances at another girl I want to kill all three of us I want to make him watch me kill her then when it's settled in I'd kill him and because I don't want to live him without him I'd make myself next. I feel like I'm going crazy.