serious carb problem/ gas leak into intake

[Cdaddy731]

I took the carb off my truck and rebuilt it. Last night I was putting it back on, reattached my fuel line and just set the carb back on the manifold. I didn't reattach my choke or throttle linkage though. After i got off work I saw a puddle of gas under my truck and popped the hood to find gas had run through the carb and my entire intake was full of gas. It had obviously run through the engine bc it was dripping out of a bad spot in my exhaust. So with gas all the way through my engine, how bad is my situation and what am I looking at to fix this? Also, what is causing the gas to still be coming through my fuel line without anything to pump it? This new guy needs some help lol
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