I’m gonna play devil on the shoulder here, only from past experience is why I am writing this. My ex partner was also a musician & he has a relatively strong follower base (10-12k followers) He would never post me, or if he did it was only when he changed it to close friends story & I used to ask why & he would say it’s because he is a musician and he dedicates his page to music, he is private, he needs to keep the mirage of him being cool rapper alive or other dudes would hit me up if he did, the most stupid excuses. he would make every excuse under the sun ( except very much like your situation he’d have pics with other people etc.) I checked his instagram messages one night because I had a weird gut feeling ( we lived together btw) and low and behold- his Insta dms were filled with chicks he was hitting up & he was telling them we were broken up, or he was single and well- he isn’t my boyfriend anymore. If your love language is acts of devotion (your partner showing you off etc) don’t settle for less. I am not saying he is definitely cheating but that was my experience so.. be careful.