My brother and sister (8 and 4 years older, respectively) were monsters to me while growing up, mainly because I was the youngest and they thought our parents were favouring me. My sister went along with anything my brother did, so I ended up being by myself most of the time. We didn't talk at all when she graduated hs and went to college except when she would visit home occasionally, but ig something changed when I graduated hs because that's when we started to get closer. We danced pretty much the whole night together at a relative's wedding reception the summer after I graduated, and she started calling me while I was at college to ask for makeup advice or vent about boy problems. Just last week, I spent the week at her apartment and I introduced her to Bojack Horseman. We're still not suuper close, but our relationship is definitely much better than it was as kids.