To sleep with Keira, you need to complete her chain of quests, and then, during a romantic dinner , reciprocate her proposal.

The “ Now or Never ” quest will allow Geralt to take their relationship to a higher level.
To do this, you need to start making advances towards the sorceress in every possible way , in particular, at the end of the quest you need to ask the red-haired sorceress to stay with the witcher , and during the quest “ A Matter of Life and Death ” you need to kiss the sorceress when she suddenly wants to be held in her arms after drinking alcohol.

After a short disappointment during a conversation with Dijkstra, Geralt learns that the sorceress decided to follow her request, after which the witcher and Triss leave their interlocutor in order to indulge in lovemaking at the lighthouse.

To be intimate with Yennefer, you need to think about a kiss when Geralt and Yennefer fall into a trap during the quest “ The King is Dead - Long Live the King ,” and then follow her to watch her sew up a dress.
To make love to her in Kaer Morhen , you must first confess your love to her , then, during the quest “ Away is good, but at home ,” you need to follow her upstairs when she invites you.

To get to know Sakha better , you need to take part in the tournament and complete the “ High Stakes ” quest. To participate in the tournament, you will first need to find the corresponding advertisement on the Novigrad board , have 1000 gold and a deck of cards worth 70. Then you need to play, steal treasures, in general, do whatever she asks. Later, having found her at an inn, Geralt will receive an invitation to dinner, at which he can only reciprocate.

The quest “ The Iron Maiden ” will allow you to challenge a girl to a duel, for which Geralt will have to go to the mountains east of Harviken . Otherwise, you will have to fight Gundar or get a sword from the seabed . When everything is completed, Jutta herself will invite Geralt to her place. The Witcher can invite her to lie down with him or advise her to try her luck on other islands. But you should not use magic, potions or bombs, otherwise Jutta will consider Geralt a weakling.

In order to be guaranteed to have an affair with Syanna, you must agree with Regis in the quest on the proposal to free Syanna and proceed further along this storyline. In the quest “ Once upon a time... ” you need to buy back or win a red ribbon from the Little Match Girl at cards . In the dialogues of the same quest, behave like a true gentleman and show interest in the girl’s biography. In a conversation after meeting the three little pigs, it is advisable to joke. Ultimately, when the heroes climb the beanstalk to the ruined fortress and fight the Giant from behind the Clouds , Syanna herself will take the first step towards intimacy. You just have to agree that she wants to use it.

You need to pay 20 or 40 coins in one of the brothels in Novigrad, for example, in Lame Katarina or Passiflora and choose a courtesan.
Addition “Hearts of Stone”

In the “Hearts of Stone” add-on , during the quest “ And I was there, I drank honey and beer ,” Shani herself invites Geralt to spend time with her. Here you simply need to agree and be content with the evening under the moon.
Addition "Blood and Wine"