I don’t want to give any labels, not to mention that it’s not explicitly stated in canon. This character note is helpful in giving you a general idea, though.
“He’ll go for men and women of all ages, and even non-humans, as long as they’re beautiful.”
He also seems to have a preference for “macho men”, and makes a lot of references to “touching pecs.”
Ellawritesficssometimes 