So this is a fairly long question. I have a friend who i've known for a fair while now, maybe 2-3 months, anywho i believe he may have some sort of obsession with his past or past self? Something along those lines. A few years ago he had a massive instagram account with over 100k followers but for a certain reasons he was forced to delete the account and start another one from scratch. 4 years passed and he's now 19 and to me was living a normal life. However, a few days ago i found out he was, i guess pretending to be someone else on the internet? He used a different name and was using photos of himself from 2013-2014. Basically masquerading online as his 16 y/o self from 2013. I also found out he had been doing this for over a year and i believe he has a serious problem...I've tried speaking to him about it and trying to help in any way i can however he won't budge and stop doing what he's doing. He's made so many friends online as his 'fake self' and i believe he's just become too attached to stop being this other fake version of himself. I did some research and couldn't find anything specifically explaining the problem. Anyways i wanted to find out if he has any specific problems, issues, obsessions etc. that i should be worried about. Thanks!