When you find that you cannot respect someone's opinion or judgment, because of a failing in their character or ability, it should follow that you don't take what they say very seriously. His relationship with you is on his list of regrets? What does he know? He's a drug addict.

Apparently, you made an impression because like some were saying above, it is part of recovery to recognize and apologize for things you did that you regret. You should feel more honored than FMLed. I was once apologized to by an Ex who was a raging alcoholic. I hugged him and told him it was okay! We are now friends.

He didnt regret the one night stand he regretted not calling you back the next day

One night stands just happen and many people regret them.

Awe. That sucks.

he's probably on his ninth step and making an amends to you.

Actually, it sounds like you are on his list of biggest mistakes. Maybe the mistake was having you just be a one night stand? Dunno. May want to hear him out though.

Wow OP sounds veryyy paranoid, Im sure it was the one-night stand he regretted, not the fact it was with you.

They are insulting them because they're whining about a one night stand with them not being a high point in a drug addicts life.

maybe you gave him the clap.