Significance in an Instagram like?

This guy broke up w me like 5 months ago and it broke my heart even though we were only dating for 2 months. Anyways, he would always HMU occasionally and comment “sexy” on my IG/snap stories.

I finally had enough of the teasing and told him I don’t think we should talk anymore & I defriended him on snap. We’re still friends on FB and follow eachother in IG (I don’t use either often so I didn’t think to delete him on those too). Anyways, I posted on IG last week for my bday and he liked the picture. What the hell? Even after I told him I don’t think we should talk.

I know a good majority of you will think there’s no significance to a simple “like” on IG. But he doesn’t like a lot of pictures on IG so idk. Have any of you girls had this shit happen to you? Damn fuckboys