Trust is crucial!

I love my s/o very dearly, but with anything & everything in his life, there is always an excuse. Nothing is his fault & there's a "reason" (he hates the word excuse) for everything. Why he couldn't text me back after 6 hrs, why the house isn't clean, why he can't pay for lunch, etc. After a year, my eyes are finally opening & I don't know how much more of this I can take. I want a man to take responsibility of his actions. Is that so hard to ask for? Thanks