Dreams about cheating

Why just like why do i keep dreaming my man is cheating, that he tells me hes in love with someone else or I see him being overly affectionate to another woman in my dreams?!? I consider our relationship a healthy relationship, and well after having our kid I been dealing with my self not feeling confident. Hes also not the type of guy to tell me im beautiful every day but the things he do for me, and our daughter shows how he loves/cares for our family. I just hate hate the fact that i been dreaming with him cheating, i had a dream on Saturday then again last night but omg they just feel soo real like if im dreaming all night like the one on Saturday i felt it was a whole day in my dream 😤😩😫 i have access to his phone and ive never found anything or i have never seen him do something suspicious but this dreams make me go crazy. Or maybe its just that a dream ?!?