Try my lyrics gapfill to go with it (you can check the answers on a lyrics site like this one.) And have a look at my useful phrases underneath.
"We were bound to get together"
be bound to + V is a very useful phrase which means something was sure to happen.
Teresa's bound to be late. (She is always late so it's sure that she'll also be late this time.)
We were bound to get together. (It was sure to happen, it's almost like it was destiny.)
"Don't you dare look back."
don't you dare + V is another phrase we use a lot when we tell someone not to do something, in a very strong way. It's like "don't even think about doing it."
Don't you dare be late again tomorrow. (Don't even think about it, but if you are late, you know I am bound to be really angry.)
Don't you dare put your dirty shoes on the sofa.