<human>: Can you provide a brief rundown of the text in within 3 sentences?

Well... my boyfriend[M25] and I[F24] have had a difficult time the last few months, but we love eachother so we want this to work. We have been together for over 5 years.

He has been very open with his deepest thoughts during the last weeks. And I have been hearing things that you don't want to hear.
Things like his dream is to make kids with different womans. We have to kids of our own. He says that it wouldn't work out since we already have av monogamous relationchip. But if we don't work out he want to woman in a relationchip next time. 

Until know we have had a typically monogamous relationchip where we includes only the two of us. The sex life has always been good, and I think that I am a typically superwoman. I work hard, deliver and pick up the kids from kindergarden every day, making delicous dinner, take the most of the housework by myself and blablabla..

He has always said that he want it to be us till the end. That he wants only me. But know he also says that he would want a treesome. That it wouldnt work out actually doing all this. But it is in his head.
<bot>: I feel stupid, not worthy and especially not a superwoman. If I was that for him, why would he have these thoughts? Why would he want more, and I'm not enough.