@hev123 and boyfriend. Welcome to the forum.
You've already been given great , honest and important advice regarding your boyfriends diabetes.
Sadly there are times when we have to face up to certain realities in life. In this instance Diabetes will control and ruin your life...........if you let it.
You can deny having diabetes. It's not going anywhere though, it's just going to live and ultimately thrive with this outlook.
You can fight diabetes. Again, it's not going anywhere, it'll be there every morning ready to do battle with you again.
You can embrace diabetes. We know it's not leaving us, so why not make it earn it's living, use it to our advantage, make it the reason we achieve. It's a difficult way to do it but it can be done.
I feel your boyfriend maybe hoping that because he has no real symptoms at the moment and will be the same tomorrow that time his on his side. Sadly diabetes doesn't play by those rules. It's like a fungus growing deep down in the dark recesses of us and the longer we keep it in the dark, the more it grows. Your boyfriend along with your support ( he's already on a winner having you by his side ) needs to let light in. Realise that there's not many people as strong and as stubborn as us T1's.
There's so much we can do in life, even little insignificant things. Doing them and having T1 makes them all the better.
There's no reason why he can't be the very best T1 diabetic boyfriend there is, instead of just being the best boyfriend.
Encourage, praise and laugh with him and his diabetes.
Set small targets for your boyfriend, set aside a small amount of time each day to review that days diabetes. Set achievable goals, nothing unrealistic, just small steps.
I often think in situations like this buying a t- shirt with " I'm a T1 diabetic " slogan is a good start.
Good luck both . ( apologies I do tend to waffle

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