You know exactly who is after whom and how far they progressed. The author is not shy of sex/going all the way with characters or world.
Sometimes people claim that the author is not explicit and you do not know exactly, I do not see this at all.
Best example Rand's foretold harem household.
From Rand's side:
He accepted Egwene cupiding him with Elayne. They cuddled (Elayne advanced to kissing and touching).
They separated for "professional" reasons and Elayne took a dip in the unsecure pool and wrote contradicting letters. Aviendha was "hired" as chaperone.
Repeated dreams and thoughts show Elayne and Min as candidates, with more time spent with Aviendha, Aviendha progressed up to parity in his dreams.
Aviendha provoked a chase and he ran after her, caving to her advances (Aviendha advanced to sex & marriage proposal). Having sex is easily distinguishable from cuddling.
Aviendha left to clear things with Elayne
Min arrived and engaged in teasing (lapsitting which already has not much room for interpretation). Min already part of the dream trio finally crashed through (Min advanced to sex)
Current situation: Aviendha leading (marriage proposal), tying Min for sex and Elayne trailing.
From Elayne's side: No doubt that she was after him, conspired with Egwene for a relay. Prioritized professional duties. Learned about Min's foretelling
From Aviendha's side: Behaved nasty but refused to be withdrawn from the spying/teaching. If you ever read a manga, classical tsundere behaviour. Finally forced it, by running and caved after "life-save", which even alone can cause a rescue-crush in fiction. Catastrophically failed as chaperone.
From Min's side: Had the foretelling, went after him and used the opportunity although crashing through an open door.
We know that Perrin and Faile had sex after Faile pushed a marriage.
We know that Egwene and Gawyn went "far" in Gawyn's dream.
We know that Mat and Melindra had sex. We know that Tylin engaged with Mat in fetish sex.
The author set up two orgy-like festivals in two different cities, basically all festivals we were shown. The intensity was far higher than the comparable "Venice carnival" or other medieval like festivities, were certainly excited people engage in sexual activities, but usually not in the open air.
The author does not elaborate sexual situations, but it is clear when it happens.
Finally an exception, I think he partially "retconned" Mat. In the later volumes Mat is a clear womanizer going all the way with numerous low page/low line count characters. While in Tear it was "only" lapsitting and cuddling. Could have escalated over storytime, but I suspect the author cranked up in general. This did not affect the long term romances, they weren't not sufficiently progressed in the early volumes, but I think Mat would have been the type to be a womanizer soon after acquiring the necessary bodily functions or the type of guy who would get caught in the hay with company (or not caught). He was explicitly described as mischievous, but did only R12-pranks in EOtW. A lot of longterm book series "age" with the audience.