How do you trust someone who isn't sorry?

[hope2011]

I'm not sure any more abusive than most cold, selfish WAS's.

So I asked H for the last month to change the fuse in my car cigarette lighter so I could plug in the GPS. Of course it wasn't a priority because its not bothering him and he has GPS. I asked H if changed it this morning and his response was "you bother me with that now"? I didn't respond. I asked for a month, I can't find my way out of a paper bag and sometimes my job requires me to drive through sketchy areas. I have 3 such visits this week and H knew this. I plan to figure out how to do it myself tomorrow rather than depend on him.

4 hrs ago he texted between flights (I was going to type between layovers but with H that might not mean planes). He told me to use GPS on my phone (subscription costs). No apology, no nothing else. I haven't responded. Should I?