Girls, she still uses the nicknames we gave each other during our relationship. Is she hinting at restarting the relationship?

Let's say I used to call her "xyz". After our breakup she occasionally flirts. Just recently I mentioned that I need to eat something as I was feeling hungry, she replied: "eat xyz"

Is it just fun and harmless flirting or she still has feelings for me. Don't advice to ask her. We have been good friends since breakup and don't wanna ruin it with my assumptions.

Girls, she still uses the nicknames we gave each other during our relationship. Is she hinting at restarting the relationship?
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