I also think narcissists are intent on creating the Image of love and desirability for themselves. As long as they can prove they are sexy or attractive or desirable, they can project fault and blame for the failed relationship on their prior partner(s). Your X probably views those photos more than anyone else. Anytime he feels some doubt about being rejected because you arent reminding him how much you love and need and pine for his sorry arse, he logs-in to his posted photos and reassures his stud-ly-ness as in, See how HOT I am? Two women vie for my attention!
Keep the faith. Be good to yourself. Thank the lord you got out of that relationship. And remember Karma.