No, I don’t believe that. I’ll tell you as a Blake watcher that he’s always been a self-pitying type. Poor, poor me. Even when he was hosting Carson!
Now, I wouldn’t be surprised if his parents ripped him off financially, but sexually? No, don’t believe it.
He’s in The Treasure of the Sierra Madre, btw as a tiny tot who gets scooted away by Bogart.
We’ll never know.