both of you are having the same problem. where are you located? the temps and the length of sun light is changing. breeding season is just about here and the snakes could already be sensing this. breeding season will throw many males off feed and could last for months. this is normal.
you call the bee a big guy. sounds healthy as long as he has weight for his length. I wouldn't be concern. ask the breeder what he was feeding on, so you know what to feed him when he goes back on feed.