New Forms of Relationships and Sexuality: The Rise of Polyamory, Casual Sex and Open Relationships
- Michelle Martins de Oliveira
- Oct 1
- 3 min read

The way people experience love, intimacy and sexuality is changing rapidly. Social media, dating apps and new cultural conversations have placed polyamory, casual sex and open relationships at the center of debate. These models challenge the traditional idea that happiness and fulfillment only exist in monogamous relationships.
But if on the surface they promise freedom, authenticity and the possibility of multiple connections, in practice they also bring psychological challenges. Jealousy, insecurity and the search for true authenticity within these dynamics are frequent struggles, often silenced by the idealization of “modern love.”
The Promise of Freedom and Authenticity
Many people turn to polyamory or open relationships motivated by the desire for freedom. The idea is to escape the restrictions of exclusivity and to explore connections with different partners without guilt. Casual sex is also part of this trend, often seen as a way to separate pleasure from commitment.
The discourse surrounding these practices highlights authenticity, honesty and transparency as central values. After all, in these relationships everything should be negotiated and agreed upon. However, the emotional experience is not always as simple as the discourse suggests.
The Emotional Weight of Jealousy and Insecurity
One of the most reported difficulties by people who live in polyamorous or open relationships is jealousy. Even when agreements are clear, many discover that seeing their partner with someone else awakens feelings of comparison, fear of abandonment and a painful sense of being replaceable.
Social media and forums are full of reports of people who defend non-monogamy in theory, but in practice feel overwhelmed by anxiety when faced with real situations. It is not uncommon for open relationships to collapse under the weight of insecurities that have not been adequately worked through.
The Risk of Superficiality and Emotional Exhaustion
Another recurring theme is the feeling of superficiality. Casual encounters may bring excitement at first, but many people report frustration when they realize they are unable to establish deeper bonds. The abundance of options in dating apps fuels the illusion of unlimited opportunities, but often results in emotional emptiness.
For some, the constant pursuit of new experiences becomes exhausting, leading to a cycle of dissatisfaction and a sense of being disconnected from themselves and others.
Authenticity in Practice: What People Are Really Looking For
One of the most important psychological questions surrounding these new forms of relating is authenticity. Is the choice for polyamory or casual sex truly an expression of personal desire, or is it a response to social pressure and the fear of commitment?
It is essential to reflect: does this model align with my values and emotional needs, or am I just following a trend? Living authentically means listening to yourself, being honest about your limits and making conscious choices, not simply reproducing what is fashionable.
Reflections for Those Exploring New Models
• Jealousy is not proof that non-monogamy does not work. It is an invitation to self-knowledge and to conversations that deepen intimacy.
• Insecurity can be reduced when you develop self-esteem and clarity about your own worth, independent of others.
• Authenticity is not about rejecting traditional models or adopting alternative ones, but about finding what resonates with your own identity.
• Therapy can be a valuable space to explore your desires and limits without judgment, strengthening your emotional awareness and your ability to build healthy bonds.
Beyond Labels: The Truth About Human Bonds
Polyamory, casual sex and open relationships are more than trends; they are signs of a society that is rethinking the way it relates. However, no model is free from challenges. Every form of love requires maturity, self-knowledge and communication.
The most important thing is not the chosen structure, but the ability to live it authentically and consciously. What truly sustains a relationship, whether open or monogamous, is the capacity for presence, respect and genuine connection.




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