The easiest mistake to make is to push the boss down below 15% while the other adds are still up. Wait until the third jealous male is dead and you should be fine.
This. We've had issues lately of too much DPS, during the 3rd pool we push him below 15% and now we have the little adds, the jealous male, and the extra adds from the burn phase all at once, which can be too much to handle.
If you're close to the 3rd pool (you'll know you're close when boss returns to where you tank him at the start of the fight), stop DPS at around 20% and just kill the adds before going back to the boss. If you're hitting 4 pools you're probably hitting hard enrage, as it happens just after the 4th pool.