Guys when you start breathing really hard, does that mean anything ?

Last week I was hanging out with my friend travis and on our way from the beach we were stuck in traffic and he started breathing really hard . I'm not sure if he noticed or not but it was really annoying .Even though he had on sunglasses I know he was looking at my thighs and boobs ...i had on shorts and a bikini top.

I think he was getting turned on but I didn't know how to ask him that with out embarssing him .
Guys when you start breathing really hard, does that mean anything ?
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