me love you long time

i hope you read this sentence is this correct grammar i read on the wall it said “me love you long time” thank you my teacher i learned english that you sent to my email. could you tell me how was my english level? thank nestor

‘Me love you long time’ is not correct grammar.

Without further context, my guess would be that this should read ‘I have loved you for a long time’ or ‘I will love you for ever.’

I wonder if you have seen it on a wall in Northern Ireland?