Overreacting?

So this might be really silly for me to ask but I just need to know if I'm being ridiculous. My boyfriend went out with his friend to the movies and posted on his snap. Whenever he's out with his friends he posts on his story. But whenever we're together he never posts. On our anniversaries he never posts, on national girlfriends day and national couples day, he never did post. The only time he posts us is when I ask him to and I just feel like he's ashamed or embarrassed of me. We've been together almost a year and a half now. My friends have asked me and I've talked to him about it and he just says he's sorry and that just never thinks about it or doesn't have time. On top of that he never snapped me back but can post on his story. Am I overreacting or wrong for feeling like I do?