https://www.healthcentral.com/article/erection-during-foreplay-kissing-when-ready-intercourse-erection-lost
Sexual Health

Why do I get an Erection for Foreplay, but Lose it Before Intercourse?

    Answered by Amy Hendel, P.A.
    You should know: The answer above provides general health information that is not intended to replace medical advice or treatment recommendations from a qualified healthcare professional.