(*SPOILERS*)My first problem with Persona 3 FES.

I've been playing through Persona 3 FES for about a week now, and we've died a few times, but have easily come back right after. But, my most recent death was a lot more annoying. 
We're about 13 hours in, and we're at the second "ordeal" where there are two bosses and Fuuka has just replaced Mitsuru. My friend had left, so I had to deal with it myself (We would usually talk most of our turns through). Yukari was incapacitated in a cutscene and unable to fight, so it was just Akihiko, Junpei, and I. I told Akihiko to heal because he was the only AI with Dia. So, we go through a turn, and we all get hit pretty hard. I attack again, trying to take one of them down assuming he would heal me during his turn. He healed himself. The bosses did their transformation thing so I tried to figure out their new weaknesses, assuming that this time, Akihiko would heal me. He didn't. I got killed the next turn. I hadn't really had a problem with a AI up to this point so this was kind of annoying. I know it was mostly my fault, but I still have to go through all the cutscenes before that moment over again.  
So, I was just wondering if any Giant Bomber had a problem with this boss fight, or any real problems with the AI in general (Please no spoilers).