You're imposing your assumptions and labeling on him. You assume he likes both sexes equally based on a statement by Tyler S. about both sexes lining up to give him a bj. Doing something doesn't automatically mean liking it. What wasn't said: anything by DD, whether he did get bjs from females, whether he enjoyed all of the bjs, does he have intercourse with women (and as often as with men and with as much pleasure). Also unknown is whether this was a paid gig for the event and what were the terms.
Lying underneath your statement is the apparent need to put people into rigid categories based on a bit of anecdotal "evidence”. Do we really need to put him into the "gay”, "bi”, "straight for pay” silos? No need to categorize or label him.