Most Helpful Girl
It's not PTSD, it's more like your ex not only broke your trust and faith in him, he broke your trust and faith in men. For example, my uncle who I thought was the best uncle, a great husband, father, brother and son, was cheating on his wife before, during, and after she had their second child with her close friend. For a while, his actions destroyed my trust and faith in guys, where I'd wonder if my boyfriend is faithful, because if my uncle who we all thought was a great husband was unfaithful, then perhaps my boyfriend is also unfaithful. For me what helped was recognizing that he is not representative of all men, that I do know guys who are faithful to their girlfriends/wives. If you are having difficulty working through it, I would suggest seeing a professional to help you work through that distrust of men, to help restore the trust and faith that your ex broke.