What does it mean when a guy keep changing his profile pictures? Like adding them, then delete then add another one?

I asked this girl why she "changed her profile picture" the other day, from her and a friend, in their bikinis, with their backs to the camera so you could early see their butts, to her and her friend that was getting married, in her gown and her in her wedding ceremony dress. She said "cause i can/wanted to"
I was more asking why she didn't change it back to her and her man. The reason is, because, i have reason to believe she has a boyfriend of 5 years. In may, that's what she said, but, that was then, so, how do i know if she's still with him or not, without asking her?
by the way, when i asked her why she changed her profile picture, she said "ill change it again", and i said, well no, it's ok, i was just curious (im thinking in my head, why didn't she change it to her and her man), but, she actually sent me the picture of her in her bikini, and said "there, now you can look at it all you want"
Is she being sarco?
I am an expert. He is 1) Insecure and immature (very). 2) Likely had some sort of mental imbalance or disturbance 3) Is trying to get someone's attention. Don't get involved with him. If you get really close it will be a disaster. The older the man is that does it the more of a disaster it will be. He may seem confident but he is not.
Opinion
5Opinion
Nothing specific apart from he's spending too much time on social media and needs to join the real world!
It means that he is not getting any hits and he is frustrated as hell. And. lots of changes means Fresh and serious to the women...
thats only concering tinder, but what does it mean on whatsapp or instagram
He's looking for a good one but his camera is giving him crap
It's his personal golden rule..
He hates himself and seeking validation
He's probably inscure or vain or both!
Nothing
Too picky
Superb Opinion