Did I actually Cheat?

So a few months before I got married, I went to gay pride with my gay best friend(female). Her and I have already had the discussion about not being attracted to each other and being in a completely plutonic relationship. I love her and we basically treat each other like sisters. Anyways, at one of the clubs I playfully grinded( like two Ass shakes on her) and thought nothing of it. To me, there was no ill intent, no sexual motive... that’s just something that people in my generation do without reading too deep in between the lines. It didn’t mean anything to her so when i disclosed the fact that my husband(then boyfriend) thought grinding was cheating, She laughed. He on the other hand, to this day still says I cheated on him and I just don’t see it. I could see if it was with a guy or someone that was interested in me but for him to still consider it cheating after I explained my stance... what do you guys think? Did I actually cheat on him?