Women's breasts are not communication devices. They are not sending you, or your male protagonists, encoded messages. They are, in fact, insentient. They neither dance nor issue invitations.
You know how it's rude to stare at boobs in real life? It's a similar breach of etiquette to mention them repeatedly in your prose, while their owner is just going about her daily business.
I know, it's hard to believe, isn't it?
Most of the time they're just sitting there, just as your own moobs are just sitting there, quite innocently, not carrying any meaning whatsoever.
If it would count as sexual harassment in real life, don't put it in writing.
Breasts have no musculature, and so cannot move independently. They do not surge upwards in excitement unless their owner is bouncing on the bed. (In which case, good for her.)
But if you are trying to write a serious novel please try to hold back from mentioning them all the frickin' time. It's downright creepy.
If ever the phrase 'kill your darlings' were relevant...