I had to do it
Hice eso, no porque quisiera, sino porque tenía que hacerlo.
I did that, not because I wanted to, but because I had to.
But I had to do it.
Sorry, I had to do it.
I knew I had to do it.
I thought I had to do it.
No lo he hecho porque quisiera, sino porque tenía que hacerlo.
I didn’t do it because I wanted to, but because I had to.
Someone had to do it.