Issues with family, friends, or boy

Okay so I ran into his mom and we got to talking... well how I ran into her was because I was coming back from my walk. So she just asked what I was upto and all that until I asked her if she met Joe's new girlfriend Julia... and if they hung out a lot. I told her it was awkward seeing him at the movie theatre because that's where he works... his mom told him what i said to her later that night he texts me saying she did...

my response was Um okay, I figured your mom would tell you. I forgot what I waid. Then I said why does it matter to you and that why are you bothering me about it. He didn't respond back. He also smiles at me whenever I go to the theatre and I have no idea why.