Answer:
The speaker and Annabel Lee were lovers, but Annabel dies and leaves the speaker alone.
Explanation:
Reading the poem we can see that the speaker and Annabel Lee were in love with each other and were happy. This was a positive and comfortable relationship for both of them, however, as the speaker himself says, the angels were jealous that mortals could have such a strong love for each other and this envy caused them to kill Annabel Lee transforming all the suffering love, since the speaker lives alone mourning.