I had the cutest conversation with one of my students the other day, right after several of the boys announced they had girlfriends:
Me: B, you have a girlfriend?
B: (with a huge grin) Yup!
Me: Who is she?
B: [Insert name I forget here.]
Me: How old is she?
B: Um... 5! (Holding up five fingers)
Me: How did you meet?
B: By my locker! She was going to da bathroom!
Me: Oh, wow! Does she know she's your girlfriend?
B: Yah! We see each other sometimes!