Not sure I would class those things as expression of love. Example, an old man on bus starts talking about the old days to a twenty year old women. After an hour it's his stop, as he get up she declares, "Be careful you don't want to trip" ... that is not love. Care, compassion but not love.
Friendly reminder that unless that person is explicitly sucking a dick or ACTUALLY having sex, then there is NOTHING sexual about their body + the clothing they wear. It's hot, I wanna be comfortable, there's NOTHING sexual about legs + shoulders, etc.