If a man doesn't sexually contact his wife for 4 months...is he doing it alone or men can not ejaculate for that long? is it possible

Very difficult ?: This is a difficult question. There are some men who can go that long without ejaculating. In a normal marriage with a healthy young couple, however , this would be extremely rare unless the man had some medical inability to ejaculate. Most common causes I have seen in my practice include man masturbating alone, man having sex with another woman or man is homosexual. Please see a therapist to help.

No, he won't explode: Due to semen buildup. He might have have some nocturnal emissions. He might masturbate. He might not masturbate or have sex with others. If this is your spouse - you can ask him directly. Take care.