So there's a twist..

So, I am dating Kyle, and today I went back to school in Iowa (three and a half hours away). The relationship is very new, like less than a week offically. When i got back on campus, I went to my ex boyfriend's room to give back a webcam. When I saw him, i fell in love all over again instantly. It was like my eyes had been opened, and it was clear that i was supposed to be with him. One thing led to another, and we kissed. It was magic, like the piece i had been missing had been placed correctly. Now this is all well and good, but: A. He still is very immature and undatable B. The break up was messing and alot of bridges had been burned C. I AM DATING SOMEONE ELSE! I cant believe that i cheated. It boggles my mind, but in that moment, i didnt kind, because i knew David was the person i am meant to be with. So what do I do? i want to give Kyle a chance, because he is also a great guy, but it is wrong to love an undatable guy, and use a datable one in the mean time until the undatable one becomes availible. I am so confused.