Her intention was to upset her husband and then laugh at him because he was upset. What kind of mother is she going to be? How can he ever take any heartfelt conversation at face value ever again? I wouldn't be able to continue being married if lying to me and upsetting me was sport.

A 'prank' is saran-wrapping the toilet, covering the doorknobs with Vaseline, short-sheeting the bed. THIS was not a prank. This was cruel. Now OP will forever wonder: is the child mine?

I'd divorce her just on the ground of being stupid enough to think joking about cheating is funny. I can accept many flaws in a partner; stupidity isn't one of them. Stupidity is fatal.

That last YTA is nuts! It's a bad prank that's not in the least bit funny and it should be her who apologises and as for the "grow up and stop moaning to teenagers on Reddit" why can't someone get an outside view? You're horrible to even say that, and you're probably a teenager who thinks nothing of putting people down. Reddit isn't for you or just teenagers you fool! Anyway Rant over! I hope this doesn't split you up. I think as the years have gone by, you've become accustomed to her pranks and you can mostly spot one. I think because of this, she pulled a very stupid thoughtless prank without even thinking of the fact that it would hurt you. Just talk to her and make her understand what she's done. I'd go home and support your heavily pregnant wife. I don't think she'll pull a stunt like this again NTA OP!

Emotional distress is not a prank!

This is emotional abuse, if it was a "prank". There's also a good chance she's cheated, told you, and then walked back her confession because she got cold feet. How can you trust her truthfulness when she says she didn't cheat, when she just told you with equal conviction that she did? This goes beyond pranking you by trying to get you to believe a tall story. It's straight up mental cruelty. I would highly recommend insisting on both counselling and a paternity test. She has created a doubt in your mind by confessing to cheating, now you have the right to demand that doubt be set to rest. Brutal truth is, a woman who hasn't cheated, and wouldn't cheat, is not going to sit you down and make a tearful confession that the baby might not be yours unless she straight up wants to hurt you.

She slept with her boss. Do a DNA test.

She's a sociopathic bully. Period. Why did this guy marry her? Playing jokes on people so you can laugh at them for being gullible isn't funny, it's cruel and belittling.

NTA: OP. AH: Wife. I couldn't live with someone like that. Constant jokes get old fast, and when you get upset/have enough of it, you're the Bad Guy. I hate the phrase "I was only joking, jeez". My sister's 2nd hubby was like that, but in a sexually insinuating way- I couldn't stand being around him, with his "I was only joking!" response when you reacted negatively. She divorced him 2 years later (which was pretty long, tbh) for making sexual jokes at events as well, and embarrassing her. It can and does ruin relationships, unless you both have similar personalities, I suppose. Pranks are even worse. BTW, his thread on Reddit has been suspended. Not sure why that happens???

The last YTA is stupid af. "Happy wife happy life" is as out of date as "women belong in the kitchen" Why should He have to apologize for HER actions? She's supposedly an adult so shouldnt' need to be infantized to excuse her behavior, also pregnancy is no excuse for this behavior.

"why don't you trust me?" "you just lied to my face." She's a grown up. About to be a mother. Time to learn the difference between a prank and an AH move that causes genuine distress/ terror.

NTA. But ... she's ... a load at times, eh? Maybe describing that, this time, due to topic and seriousness of the subject, it did actually, really, hurt you. Is she a bit insensitive at times, anyway, or is that something sort of new, by her? Anyway, ... make clear that some boundaries are there for a reason, and this is one of them, and that she needs to be funnier in future pranks, not just add to the viciousness of it all. Good pranks may make you feel stupid for a moment, granted and all, but this one exceeded this by far. Wouldn't be sure enough to call this a reason to end things, ... child, pregnancy and so ... if you can talk to her, and make believe that you're making believe that this was due to hormones ... so that she gets you're building her a bridge that also warrants the excuse won't be appliable forever, ... that might be my attempt here, so that the overness of it is clear, but without playing power games or a huge load of guilt to be felt.

A good prank of the kind she was aiming for has someone selling, dead serious, something patently absurd. The skill is in acting convincingly straight while telling something that if real would be utterly absurd. Spinning a convincing scenario over something that is actually plausible isn't pranking, it is just deceiving.

In no world is even the thought of being cheated on funny. It is hurtful at best and devastating at worst. No one who cares for you should hurt you for a joke. On top of that, how can you trust someone who lies to you?. Even if they say "just kidding" after. If you can lie so easily to my face, how am I supposed to know when you are telling the truth? When you tell me you are? But what if that's a lie too?

She actually had an affair. She tried to tell him and he got upset. So she backtracked and said it was a joke. He needs a paternity test and a divorce. Anyone who thinks yanking around your emotions is funny, is not a safe partner. And we all deserve to be safe.

Prank or emotional abuse? I would like to see how the YTA crowd reacts when they got pranked like this... The pregnancy is no excuse.

We had this kind of behaviour from men towards their wives and so I wish I could tell OP the same we tell those women: it's not 'pranks'. It's not 'jokes'. Those are meant to make you laugh. She shows abusive behaviour, and it's time to nip it in the bud for yourself and for your kid.

If this guy were my friend, I'd tell him to run a DNA test after the kid is born. Just in case.

This one was a no-win scenario for OP. He fell for her prank, therefore he doesn't trust her. On the other hand, if he didn't fall for it, you know 100% she'd have been ticked off that he thought she was a liar.

Pranks are juvenile, they have no place in an adult relationship.

this is why pranks should be illegal at the government level, and punsished as if you did the actual crimes.

Folks, time to calm down. OP's account has been suspended, and reading a bit more on reddit itself, basically everyone agreed that this was an AI bot posting a sob story to farm karma.