The meaning is also relatively shallow: it is three years of acacia, and I feel that my feelings have accumulated to a very rich degree, but in the end there is no result, and I still fell asleep with acacia and failed to hold hands with my sweetheart.
I think I have a sweetheart, but I haven't been able to hold hands with my sweetheart. In the end, I will be with Acacia, not with my love.
So, now it can be said that he is alone.