Guy's Behavior

Does it mean anything when a guy starts dressing nice all of a sudden?

I have a long history with this guy and usually he’s always in a t-shirt and jeans and Nike shoes, just causal clothes. But today I saw him in like a black dress shirt with black jeans and vans and i was just so caught off guard like who are you, bc last time I saw him he was still in t-shirt and jeans and nikes, I don't know if it’s like a one time thing or he was going on a date or something or a funeral I don't know, but I was gonna say something like why are you so dressed up, and tell him he looked nice but there was another guy there and I didn’t to make things awkward or have him assume there was something between us I mean there wag something between us, but it’s kind of done with now which kind of sucks bc I miss him a lot but yeah I was so shocked. Does it mean anything when a guy dresses up
Does it mean anything when a guy starts dressing nice all of a sudden?
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