My ex seems to have untagged/deleted himself (on facebook) from pictures of me and him?

Abb123x
I was looking through my ex boyfriends photos on facebook and there was only one photo of me and him that he was tagged in. However when we were going out he was tagged in more than just one! I also looked through his Profile pictures (photos that he had as his profile pic) and there was none of me and him, whereas he HAD had about 2 pictures of me and him as his profile picture whilst we were going out but now they've just disappeared.

We're both 16 and were going out for 1 year and 3 months (however we we're both 15 for most of our relationship) and he split up with me 3 months ago. We ended on good terms and are still quite good friends and have the same group of friends etc.

So why does he seem to of removed the pictures of us in his profile pictures and untagged himself from a few pics of me and him?

He moved on about 3/4 weeks after the breakup if not before that so it's not like he still loves me and struggled to look at them and we're friends so it's not like he hates me :/

It wouldn't exactly effect his profile or anything, people would only see them if they looked through alll of his photos and there still good memories so I don't see why he had to do it :/
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By the way He doesn't have a new girlfriend
My ex seems to have untagged/deleted himself (on facebook) from pictures of me and him?
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