Poems of love should come from the heart because the best lines come by themselves as they suddenly appear in the mind. However, this does not mean that they do not need to be specified and selected.
Work on the technical side of the poem as the errors in the simplest terms can distract the reader from reading it further. So the writer needs to be clear and precise from the start to the very end.
Greater response comes from the audience when poems are about love suffering and pain. First, due to the fact that the writer is trying to describe the situation of himself and secondly, people are just more interested to read about the tragedy.