How lucky your friend is. It's wonderful to have a friend that cares as much and wants to be there for him. I do think that communication is a must. Or at least watch him to see what he does when his sugars go low or high. The number one is having something with you that would benefit him if he goes low. We each have something that works for us best. Some people like coke, some peanut butter chocolate bars, some hard candies. If you can tell what it is have some one you. As you are with him, you will how he reacts to things. Just like with any other friend, see what he needs and be willing to help.
Most of all have fun and enjoy him.
