yeah she was his high school ex and they had a disastrous relationship. they're cool now, but it doesn't always stay that way. they still bicker, so who knows how long the civility will last lol. there 100% wouldn't be any issue concerning who he's friends with or anything with, so we can say they met and hung out during some of his parties harley got back from college in late december after leaving when she was 18, so they would've met sometime after that