history: Today I was getting coffee and the person in front of me paid for my drink. I couldn't believe people would be so nice, I was so thankful because money has been tight.  Today I was getting coffee and the person in front of me paid for my drink. I couldn't believe people would be so nice_comma_ I was so thankful because money has been tight. How thoughtful.  Now you have to pay it forward_comma_ as the saying goes.
current: I will, you never know when someone else is in need! 
next: Kindness is infectious.