Do you have a time limit in which you need to complete your internship (for instance I did a 9 month internship before my final year of college).

Here is the deal: you are an intern. You probably aren’t instrumental to their operations. I say go for your new gig if it’s a guaranteed hire. That’s capitalism. Don’t try to negotiate with your current company. And don’t burn bridges (you arent). Just simply say you have another opportunity you are going to pursue, and submit your 2 week resignation. Thank your current company for their offer and time (since in reality you were probably costing them money). Best of luck!