I Have Been Married For 12years Was Together A Yr.before

I have been married for 12years was together a yr.before married . After we gotmarried all he really wanted to watch was porn or mmovies with nakedness or some steamy scenes he'spromised me rrepeatedly he would stop. Promises always broken,he relieves husself as much as he can and thinkswont get caught.when we r intimate seems he only wants to reach orgasm as fast as he can. No foreplay no anything. It never takes long for his orgasm. Always under 20seconds. Recently he has went from porn to sex date sites on his phone even when I'm home. Could he be addicted to orgasms not really the sex but orgasms and if so how can I help him see he has a problemand needs help