['I owe my friend a pretty big amount of money. I was supposed to pay this week but they said they will give me another month. Did not expect that at all.', "I bet you're relieved!  Good friends are like that though, especially if they know you're struggling.", 'I know, I am so surprised they gave me another month. I am thankful for his understanding.']
Maybe when you pay him back, you can get him a little something extra to show your appreciation.
I owe my friend a pretty big amount of money. I was supposed to pay this week but they said they will give me another month. Did not expect that at all.