Breastfeed Best Friends Baby?

My best friend and I have babies 3 weeks apart. I went to visit her the other day and her toddler and infant were both screaming and she was trying to console her toddler. My baby was peacefully asleep so I went I go pick up her infant to console him. She asked if I'd feed him and she said she didn't have a bottle pumped and would I nurse him. I was sort of taken aback at first then decided well ok sure!! If a baby is hungry you feed it if you have the means. So I did it!  Weird or not really?