Well thats love in my oppinion..
It is really up to you whether you forgive him or not, but it is a great comeback..hehe

Many guys dont usually write poems to girls unless they really care for them n even though u wont be togther u cant let a great friend slip away like this cuz once he is gone u may never find a friend like him ever again

If he made the effort to write you a problem, he obviously cares, but then what he did exactly could have been really bad. in my oppinion forgive him, and goodluck. oh tell him the poem is niceli written