Dear Ann Landers,
was stopped cold by that letter from "Out- maneuvered in Arizona," whose wife left him for a computer lover. My son's wife just left him for her cybersex lover. Maybe she wasn't very happy before, but it's a tragedy when a woman walks out on her hus-band and three small children for a stranger. There's going to be a lot more of this sort of thing, Ann. Just you wait and see. -Rochester, Minn.

Dear Minn.,
I don't need to wait. I am seeing it right now, and it's sad. Want to look over my shoulder? From Sacramento: My husband (I'll call him Romeo) met Juliet on a chat line. The next thing I knew, he was on his way to Las Vegas for a little romp with his new on-line friend. Before he left, he went into hock for a new Mustang so he could show off. Chico, Calif.: The Internet can be addictive. It also can be danger-ous and destructive. People suddenly become whoever they wish to be, hiding behind a piece of electronic equipment. I met three men on the Internet, and each one turned out to be a phony. Tulsa, Okla.: My wife became acquainted with a man on the East Coast via her computer. It was just "fun" at first, but when she began to stay up until 3 a.m. sending and receiving messages, I knew our mar-riage of several years was in trouble. Chicago: I discovered my husband's secret life when I decided to check out some of the numbers on his Internet bill. Maybe I'm just an old-fashioned, low-tech girl in a crazy, juiced-up high-tech world, but I told him flat out to knock off the fun with strangers in cyberspace or I was walking. He promised to quit the on-line flirting, but I'm still going to keep my ears and eyes open. Juneau: Computer chat lines can become every bit as addictive as co-caine. I have been hooked on both, and it was easier to get off coke. I left my wife and family for my cyber-vamp, and within three months I discovered she was a nut who had broken up three marriages before she almost wrecked mine. I'm back home now, in counseling, and thank God my wife was able to forgive me. It appears that the electronic geniuses have hatched a potential monster. Those who are currently flirting on the Internet should be aware that it can lead to serious long-term trouble. WAKE UP AND SMELL THE IIIIFFEE! It has been said that sex takes up less time and causes more trouble than any other single activity. My mail supports this allegation. Curiosity on the subject abounds. Ignorance is rampant. Every day at least a dozen readers want to know, "What is normal bedroom behavior?" I must answer that question with yet another question: "Who gets to decide what is ''normal''?" Please continue to read with an open mind.