Why does he chuckle in this situation?

Anonymous

My guy friend who ill call "jack" (who I'm quite sure has a crush on me since we were kids, all the signs are there plus he gave me a diamond bracelet when were 11-12 years old) chuckled softly when I told him that one of our mutual friends asked if we are dating, then he also chuckled the same way when his best friend introduced me as "jacks girlfriend" to thier other friend. "Jack" is a very very shy person. I am trying to understand what this means, if anything st all. I feel I should also mention that him and I had like a 10 year gap, he found me on Facebook and added me, he also started liking my selfies and got together with me after he found out I was single.

Why does he chuckle in this situation?
3 Opinion