Maniy is the fluid that is released through the penis during orgasm.
As for madhy, it is pre-seminal fluid; orgasm does not accompany it.
The wetness you experience is not due to semen. Rather it is due to madhy.
In the case of seminal ejaculation, you ought to perform ritual ghusl; in the case of madhy, you need only to wash your genitals and renew your wudu.
Almighty Allah knows best.
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Views expressed by hosts/guests on this program (live dialogue, Facebook sessions, etc.) are their own and their appearance on the program does not imply an endorsement of them or any entity they represent.