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Justin J. Lehmiller Ph.d

Justin J. Lehmiller Ph.d

Psychology Today

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Think You Don't Have a Type? Science Says You Probably Do

Research reveals surprising consistency in who we date and fall in love with.

23.06.2026 60

Psychology Today

Justin J. Lehmiller Ph.d

When Orgasms Don’t Feel Good

Research finds that orgasm is not a universally positive experience.

01.06.2026 60

Psychology Today

Justin J. Lehmiller Ph.d

What Happens When a Couple Opens Their Relationship?

How opening up a relationship affects life, couple, and sexual satisfaction.

16.04.2026 60

Psychology Today

Justin J. Lehmiller Ph.d

Why Identical Twins Can Have Different Sexual Orientations

Two people may share the same DNA, but don't always have the same sexuality.

30.03.2026 90

Psychology Today

Justin J. Lehmiller Ph.d

The Science-Backed Secret to Long-Term Passion

To keep the spark alive, focus on shared growth.

23.02.2026 100

Psychology Today

Justin J. Lehmiller Ph.d

What Does (and Doesn't) Count as Cheating?

27.08.2025 60

Psychology Today

Justin J. Lehmiller Ph.d

Falling in Love with a Friend Is More Common Than You Think

27.06.2025 100

Psychology Today

Justin J. Lehmiller Ph.d

Does Playing Hard-to-Get Actually Work?

23.05.2025 60

Psychology Today

Justin J. Lehmiller Ph.d