A lot of people read out poems at wakes and funerals. Long funeral poems are very difficult to get through without plenty of support and practice and choose the poems you want, not what everyone else thinks you should read.
Depending on religious beliefs and personal experience, that means different things to different people. Put it in an email, subject a romantic I love you poem. Their poems are masterpieces and treasured by posterity.
Some of the most famous poems are about relationship troubles. Poetry remains the most erudite, yet the most innocent way to woo someone. You could write a funny poem about the relationship.
Poems can range in topics and styles. If you are giving it to read, put in a love card.