Yes, according to some historical accounts, Hephaestus had a male lover.
Hephaestus's Relationship with Peleus
Ancient sources, such as Sexual Life in Ancient Greece by Hans Licht (page 433), list a relationship between Hephaestus and Peleus. Peleus was the father of Achilles, a prominent figure in Greek mythology. This suggests at least one instance of a same-sex relationship involving Hephaestus.
- Key Source: Licht, Hans. Sexual Life in Ancient Greece. (Specific page number referencing the relationship cited.)
It's important to note that historical accounts of ancient Greek mythology often vary, and interpretations of these relationships can differ depending on the source and context. However, the cited text provides evidence suggesting a male lover for Hephaestus.