DEAR MISS LONELYHEARTS: I’m shocked to find out my sister has been seeing my ex-boyfriend.

Even though I was the one who dumped him, I feel she has a lot of nerve picking him up and bringing him back into the family.

The other night she literally brought him back home for dinner. I couldn’t stand looking at him right across the table, so I got up and stomped out the door.

Also, I had to wonder how long they had been getting together behind my back.

DEAR MISS LONELYHEARTS: I ran into my ex-wife this week and almost fell over. She looked like she did when she was in her 20s — in shape and thin, shiny black hair in a sexy cut and wearing tight black pants.

But the sight of her was spoiled by a pumped-up muscleman carrying some new lawn furniture to her truck. She just nodded at me, and faintly smiled. They kept right on going, but the guy didn’t go back into the store. He got into her truck and they took off together. He wasn’t store staff after all, and I felt jealous.

The next day I phoned an old friend of hers, knowing she would have my ex’s contact info. The friend warned me she was dating someone new. I said I knew that because I had run into them together the day before.

Big silence. Then the friend said, “Well, you’re braver than I would be, phoning her up right now. Good luck.”

DEAR MISS LONELYHEARTS: I really miss the first version of my husband. We were so in love and he was perfect, but I missed him so badly when he went on his sales trips. He was also lonely thinking about me, and we talked on the phone for hours at night. He would bring home jewelry for me with real stones, and say, “See? I was loving you every minute I was away.”

Then the nightly calls and closeness between us just seemed to peter out. Oddly, he was generally happy, and I was glad for that, but he seemed different — and actually smelled different. He also bought new clothes and started watching different TV shows.

A female friend of mine ran into him in another city where he was doing business, and said my guy seemed very different than the person she knew here at home. He introduced a female “cousin” walking with him, and then they took off quickly. My husband doesn’t have any female cousins. He was clearly cheating.

I decided to search his clothes in the closet. I smelled perfume evidence of another woman and found an earring I didn’t recognize. When he came home, I showed him my finds and his face got red. Then he said that it was my fault because I didn’t want to go on sales trips with him. He said he missed me so badly that he got depressed and needed a “friend.”

DEAR MISS LONELYHEARTS: I’m a gay man and I’ve made it through the university year doing my best to get over a painful break-up. After Christmas, I was finally starting to heal — but I still needed my ex to stay the heck away.

I thought he was respecting that, but I heard this weekend he’s “tired of protecting me” and is going to live his life freely. The worst part is he’s got a new guy and they have rented a cottage at what we used to refer to as “our beach,” for the best months of the summer.

That was too much! I phoned him up and let loose. He said nothing. Finally, he said calmly he’s OK being “just friends” with me, and he suggested I could rent another cottage at the same beach, with his blessing.

Who needs his blessing? Why couldn’t he have found a job far away, like in Mexico? He can speak several languages. How am I expected to be pleasant when he’s around anywhere?

MOON ALERT: There are no restrictions to shopping or important decisions today. The moon is in Pisces.

ARIES (March 21-April 19)

This is a feel-good day! Behind-the-scenes research might boost your earnings or help with an important purchase. Family relations and issues at home are solid. Something unexpected and unusual might occur. Be open to new ideas!

TAURUS (April 20-May 20)

Dear Miss Lonelyhearts: My heart is locked in cement after my last breakup and I’m afraid I may never find that one special woman. I seem to attract the same kind of bossy babe over and over.

Ironically, these pushy women tend to be looking for a guy who will tell them what to do. But I’m not a guy who needs to be the boss. I do earn quite good money, but I tend to be a follower, not a leader, socially.

Why do people always think well-to-do guys must be tough bosses? Too many stupid movies and TV shows out there are teaching this crap.

How can I find a woman who is a leader herself and doesn’t need me to be a tough guy?

DEAR MISS LONELYHEARTS: My girlfriend and I are in love, living together — a deeply committed couple who’d like to go travelling. She wants to quickly get married before we do that, “because of less trouble crossing borders.” I think that’s not a very romantic reason for getting married!

Now she’s upset and questioning why she’s even “just living” with me! I don’t know what to say. I just don’t want to get married unromantically, for travel’s sake. It’s a feeling deep in my gut. What do you think?

— Romantic Guy, Winnipeg

Dear Romantic Guy: There are cracks growing in your relationship right now, as expressed by your girlfriend, who’s questioning why you’re “just living together.”