My partner and i are poly. I am currently not seeing anyone and he is seeing someone one time every couple of weeks.

The day before i leave the house so she can come over, my partner starts over compensating. Being extra nice, caring, attentive and all the works. He also does this after she leaves and the day before i go back home. He knows i don't mind him seeing her and that him sleeping with her doesn't bother me.

He says that he does it for me, but i don't believe that. It seems to bother him more than it bothers me that he is with someone else. I feel like he is putting his emotional struggle about the situation on my shoulders and making it my responsibility to deal with, by being overly nice to me, like covering some guilt feeling. It's starting to make me feel uncomfortable.

He doesn't need/have to sleep/seeing other people. It's not a must for him or for me.

I guess my question is: Has anyone dealt with this before? What do you think is going on (he says he doesn't know and needs to think about it)? What is the best course of action?