Subtle ways to get your ex back

I blocked my ex from all socials a year ago. Recently, i unblocked but i dont want to make any moves that are too bold like refollowing. And i figured he probably doesnt check my profiles anymore since hes been blocked for so long. So, i turned my linkedin visibility on and viewed his profile so that he can get a notif if i viewed it. Idk if he still has linkedin premium. Does anyone else have any other suggestions for getting his attention without anything too obvious? We dont have any mutuals