One way is to use euphemisms and more poetic language. Instead of using crude terms, use words that are more suggestive but still tasteful. Also, develop a strong plot that doesn't rely solely on the sexual content. Maybe it's a story about two people who find love through an unexpected encounter and their sexual exploration is just a part of their journey of getting to know each other.
I don't encourage writing erotica. But if you want to write a story with elements of sensuality in a proper way, you can use symbolism and allusion. For instance, instead of directly describing sexual acts, you can describe the warmth of a shared touch or the blush on a character's face as they experience a moment of closeness.
Use euphemisms. Instead of using crude words for body parts or sexual acts, use more delicate and suggestive language. For example, 'intimate encounter' instead of a more vulgar term.
By focusing on the emotions and relationships rather than just the physical aspects. For example, describe the longing and connection between the characters first.
One way is to focus on the emotional journey rather than the physical acts. For instance, describe how the characters feel about each other, their growing affection.
To write a seductive sex story without being vulgar, focus on the emotions and the build - up. Instead of explicit descriptions, use suggestive language. For example, describe the tension in the air, the longing looks between the characters. Also, make sure the story has a deeper meaning or context, like exploring the connection between two people on an emotional level.
Use metaphors and beautiful language. You can compare the experience to something like a dance, where two people are in harmony. This way, it becomes more artistic and less vulgar.
Focus on the emotions. Instead of just describing the physical acts, explore the feelings between the characters like love, desire, or vulnerability.
To write such a fictional story without being vulgar, you could use metaphors and symbolism. Replace the direct descriptions of sexual acts with more poetic or suggestive language. Also, emphasize the characters' personalities and how they interact outside of the sexual context. Maybe describe how their relationship changed because of that encounter in a more psychological and emotional way, rather than in a physical and vulgar way. For instance, instead of detailing the sexual act, you could write about how the characters' eyes met and they felt a deeper understanding of each other, which led to a change in their relationship dynamic.
One way is to use euphemisms. For example, instead of using very direct words, you can describe the emotional and physical connection between characters in a more poetic way, like 'their bodies entwined in a tender embrace, a union of souls and a shared moment of intimacy'.
Use metaphor and simile. For instance, you can say 'His touch was like a warm current running through her body' rather than using explicit language. Also, create a mood through the setting. A story set in a softly lit, scented room can be sexy without being vulgar.