My ex GF would've fit in perfectly with this conversation. She was a major Ler. It also helped that I'm as ticklish as it gets, so she LOVED jumping at the opportunity. She'd sneak up behind me and grab my sides, and we'd come up with so many different types of tickling games and contest's(she'd almost always "win", which I was more than happy with ��😉.
Similar to what Scout said, I'm not sure if erotic would be the word that applied, it very well could've, but tickling was the main way that pulled us closer and was significant affection. 90% of our physical relationship was in some way tickle related. It was amazing. Sometimes I wonder if she's somewhere in this forum lol. Unfortunately she cheated on me, and wound up cheating on several guys over the years, so it didn't have a happy ending, but it was great while it lasted.