The first love of Dionysus (the Latin Bacchus), according to a myth from the fifth century C.E., was a boy named Ampelus. The two wrestled, swam, and hunted together. Ampelus befriended animals, and one day encountering a bull, he mounted it, only to be thrown from it, gored, and killed. The god was heartbroken and shed his first tears, and was comforted only on learning that the beloved body would turn into the vine.
This metamorphic consequence of male-male love both gave the world wine and enabled Dionysus to fulfill his destiny to be its god.