°One asking the other if their perfume is just fine and the other just leans in slightly and sniffing, both would be blushing because of their proximity and dang
°Them showing/sharing something on their phone and the other leaning in and just having silence, the one leaning in reading what the other was showing and the other is just having an existential crisis due to close proximity/ or just basking in the presence of the other, either way is acceptable.
°When hugging, the other just leans even closer and taking a subtle sniff on accident and almost practically melts