My ex winked at me, what does this mean?

My ex recently broke up with his girlfriend and the other day he winked at me. Is he just joking or is he literally trying to start dating me again? Also, his parents don't really like or trust me how can I improve my relationship with his parents and with making as little contact as possible? I'm open to any ideas on how to gain back his parents trust just as long as they're not hurtful, dangerous, or unsafe to me, him or his parents. I'll take any ideas no matter how crazy they are, because you never know, they might just be crazy enough to work! :) I also want you all to know that i'm grateful for any answers even if some are mean and that you actually care enough to take time out of your day to help me because I'm confused and out of ideas.
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Going to see him at school today, thanks for the great advice!!! I hope everything goes okay, wish me luck! :)
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Today he full out admitted to liking me and was winking and smiling at me all day, now what should I do?
My ex winked at me, what does this mean?
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