Guy doing this? Thanks?

[Cutiegirl]

This guy used to have a crush on me like 2 years ago but I never liked him back to be in a relationship. Recently we followed each other on instagram. He has a gf who has been with him since I let him down. Now since I started following him on instagram he deleted almost every pic he had with his girl. Whys that? I know is not because of me but it seems kind of weird. I'm following her too and she has every picture with him while he's deleting them

[Blue Planet]

This guy is a cheater and I find it strange that his girlfriend is not saying something to him about him deleting their pictures but I guess he's blocking her at those times do not trust him he is causing nothing but trouble

[David]

My first guess, as a guy who doesn't get a lot of female attention, is that he got excited that his old or maybe current crush is following him and maybe he thinks you like him now. My second guess is that maybe there was a brake up between them and he has hard feeling for her and she doesn't care or thinks that they might get back together.

[Lilly]

Perhaps their relationship is breaking down and she's either refusing to acknowledge it or doesn't see it. Or it could still be because he's showing you he'd leave her for you still...