You are right, and he said, over the past week or so, he's scared to open his phone because he thinks i'll get angry.
Also the comments were RIDICULOUS, like "MY DREAM, MY DESIRE" which is what He and his friends post on these models because thats exactly that they want, he said its like A movie for him, he uses instagram as a joke, and its a public wall and he knows people will see. This is not his ususal way of talking. I also said it makes me feel uncomfortable, and he said, Okay I'll stop.
and obviously I stupidly snooped and found nothing, jsut confirmation of the truth he told