ppl keep saying my boyfriend groomed me and it’s starting to bug me

i (18f) am dating my boyfriend (20m) and we've been together for 3 years. We met when i was 15 and he was 17 (year 10 and 12) while i was performing in the school musical and he was helping out. I thought he was cute - found him on social media and we became friends. I was very forward with him and i initiated everything- we've both spoken abt it recently and he said he'd never have asked me out if i didn't ask him out. anyway, After that we took things slow (just to clarify we didn't have intercourse) and fell in love and i turned 16 while he was 17 and the rest is history really- people on tiktok keep saying he groomed me but i think this age gap is fine and so do my family and friends? is this not normal? we are both adults now anyway and our relationship isn't going anywhere- it's just made me curious to others opinions // EDIT: my friends and family don’t have a problem it’s mostly just people online (except the odd weirdo), i worded my post a bit weirdly. Also - i don’t believe it is grooming myself, i fact i KNOW i wasn’t, i was just surprised so many people had an issue with it.