Bro that's not happened to me. But from what I know premature ejaculation. As long as your not rubbing one of attentionally or having sex, you just wash your private part. I'll send you a link regarding that.
"Shaykh Ibn ‘Uthaymeen (may Allaah have mercy on him) said: Can semen move without coming out?
Yes it can, when a person holds his penis so that it does not come out, or when his desire suddenly drops. Even though the fuqaha’ discussed this, it is very harmful. The fuqaha’ (may Allaah have mercy on him) may discuss an idea whether it is halaal or haraam. Some of the scholars said that ghusl is not required if the semen moves. This is the view favoured by Shaykh al-Islam [Ibn Taymiyah], and this is the correct view
Ejaculating and having some liquid coming out of your penis is not the same."