My boyfriends pics on tinder changed order?

My boyfriend and I have been dating for a month and two weeks ago he asked me to be his girlfriend. Well a week ago I went on tinder to reread our messages because they’re really cute and then today I was having a bad day and went on to reread our first messages because they make me smile and I noticed his pics are rearranged. Does tinder do this, or did he do this on his own?
My boyfriends pics on tinder changed order?
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