My ex caught me driving past his house, how bad could it turn out?

We broke up more than a year ago but we sort of still secretly into each other but nobody wants to make a move. He tease me a lot and friends always caught him looking at me. I drove past his street yesterday as he was walking along it. I was so shock but he was smiling/chuckling when he saw me. I guess he find me stalking him amusing. I am so embarrassed! I don't normally stalk ex but I guess I just miss him. Now my question is will it affect how he feel towards me?
My ex caught me driving past his house, how bad could it turn out?
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