Meet on video first.
Verified, marriage-minded singles. Your first date is a private video call, and messaging opens only after you’ve met.
Sincera is for single adults 21 and over.
Does love still matter?
Yes. Close relationships are the single strongest predictor of how long, and how well, you live.
50%
higher odds of living longer for people with strong relationships, an effect that rivals quitting smoking.
Meta-analysis · 300,000 people
80 yrs
of research keep pointing to one thing above money, fame, or genes: the quality of your close relationships.
Harvard Study of Adult Development
15
cigarettes a day: the health toll researchers now put on chronic loneliness.
U.S. Surgeon General · 2023
It even splits by sex. For men, simply being in a committed relationship adds years. For women, it’s the quality of that relationship (and close friendships) that protects health and longevity most.
Two ways to take love seriously.
Find a serious,
lasting relationship.
Compatibility-matched, face-to-face introductions for emotionally-ready people who want the real thing, matched on what matters, not swipes. Every member ID-verified.
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Strengthen the
relationship you have.
A free, science-based check-up on where your relationship is strong and where it needs care, with a personalized action plan, drawn from the leading research on lasting love.
Take the check-up →From the journal
Health
Loneliness, Community, and Why One Person Cannot Be Everything
We increasingly ask a single partner to be our lover, best friend, therapist, and whole social world. It is too much weight for one relationship to carry. The antidote is a life with more people in it.
March 24, 2026
Health
Why You Wake at 3am, and What It Has to Do With Connection
Waking at 3am is rarely random. It is often your stress system talking. And a nervous system stuck on high alert does not only wreck your sleep, it changes how safe you feel with the people closest to you.
March 17, 2026
Relationships
Boundaries, Self-Worth, and Loving From Fullness
Boundaries are not walls that keep love out. They are the shape of a healthy self, and they are what make real intimacy possible. You cannot pour a good relationship out of an empty, uncertain self.
March 12, 2026