that'd be perfect! i have some but there's parts of it i left open-ended in my mind, so there's room for brainstorming. basically, i figured it'd be a first love sort of thing, all butterflies and giddiness in their sophomore year but, as time went on and they eventually reached their senior year, the initial sparks had faded and they were kind of just plodding along simply because it was what they knew. and it was touch and go as to whether jimmy would be able to leave to go to college but, when he found out he could, he probably would have initiated a conversation, like "okay, so i'm going to college, so..." "so... yeah, let's call it". so nothing hugely messy or painful but where they were each other's first love and there will always be a deep well of affection there.
and jimmy lost his mom too, though more recently, so i can see them having reconnected when he returned to ash harbor, kind of renewing their bond? let me know if you have any thoughts or changes to make!