The barbarian player in my party is super entitled. /u/MentalAbusedRants DnD: Roll for Initiative!

My fiance decided he wanted to dm for a work friend of his and his gf who I work with. My fiance wanted me to play since I would add an experienced player to the group. Knowing what the others would pick I decided to try out a cleric which isn’t my normal go to. Session 0 started and the gf picked a circle of the moon druid, the friend picked a berserker barbarian. I picked domain of trickery. The first encounter we had, I couldn’t do much. I’m level 3 and don’t have too many spell slots but knowing my team could go down I held onto my level one spell slots in case I needed to heal someone. Admittedly I could have turned dead as we were facing zombies but I wanted the group to actually have fun so I sat back and shot cantrips at the zombies while the other fought. It was good, no one ended up needing a heal and the threat was taken care of. Well the barbarian is pissed because I never healed him. He has a much larger health pool than me or the druid and his hp was only reduced to 28hp by the end. Of course I didn’t heal him. It wasn’t necessary but he was mad. At work with my fiance he kept complaining about how I needed to get my shit together and do my job, that I didn’t contribute to the fight and that I wasn’t helpful or necessary to their party. This has angered both me and my fiance. We both know I was trying to be more tactical and let everyone shine but he just wanted me to “do my job” and heal him. I already personally don’t like this man. So how do I deal with him? Even his gf admits he has main character syndrome so I just want to be able to play and have fun. Not be judged.

My fiance decided he wanted to dm for a work friend of his and his gf who I work with. My fiance wanted me to play since I would add an experienced player to the group. Knowing what the others would pick I decided to try out a cleric which isn’t my normal go to. Session 0 started and the gf picked a circle of the moon druid, the friend picked a berserker barbarian. I picked domain of trickery. The first encounter we had, I couldn’t do much. I’m level 3 and don’t have too many spell slots but knowing my team could go down I held onto my level one spell slots in case I needed to heal someone. Admittedly I could have turned dead as we were facing zombies but I wanted the group to actually have fun so I sat back and shot cantrips at the zombies while the other fought. It was good, no one ended up needing a heal and the threat was taken care of. Well the barbarian is pissed because I never healed him. He has a much larger health pool than me or the druid and his hp was only reduced to 28hp by the end. Of course I didn’t heal him. It wasn’t necessary but he was mad. At work with my fiance he kept complaining about how I needed to get my shit together and do my job, that I didn’t contribute to the fight and that I wasn’t helpful or necessary to their party. This has angered both me and my fiance. We both know I was trying to be more tactical and let everyone shine but he just wanted me to “do my job” and heal him. I already personally don’t like this man. So how do I deal with him? Even his gf admits he has main character syndrome so I just want to be able to play and have fun. Not be judged.