This is a weird one. It established early on he has ED because of emotional damage created by the ex-wife, however, the series decides to not solve it psychologically, but instead: "how about he just gets so horny to the point ED is no longer an issue".
Then this is supposed to be a drama, but once we get the dramatic backstory of her, it only lasts half an episode and the next is just "glad we resolved that, moving on....". Then when it needs conflict: BANG!! mediocre love rivals.
Considering the "big thing" is going to be when he finally has sex, we are just gonna see a bunch of fooling around without committing to nothing. But there are nipples, so... worth it????