whenever i get an erection i have an actual break in my penis. it can bend at almost a 45 degree angle. it makes sex difficult becuz it wants to "break over" while i am trying to insert into my gf. what can cause this and is it a serious problem

If the bend is really a 45 degree angle than you need to go see a doctor. Has this always happened when you have an erection? This can be a sign of a very serious problem and you should have it looked into.