Ok, so I mentioned about having a plum sim in some discussions, that sim I'll call Angie. He had woohooed with both Henry & Linda, which are the parents of the Stein household. Angie is kinda person that will sleep with anyone so I had him sleep with them for the first time for some fun. I thought it would bring up some drama in the marriage of Henry & Linda. But they didn't discuss it at all XD So it didn't cause drama. And recently I aged Henry & Linda up to elders since before they were adults. Now they are elders, cause I don't want them to out live their 5 kids. (Don't worry, Angie isn't related, he is just leaving in their house with them.) And Olivia (their eldest daughter) & Ben (their eldest son) are very close in their age meter, which I don't like. I don't want them to grow up at the same rate. So I aged their parents up to elders so they'd be oldest, and soon I play to age up Olivia from teen to young adult.
And for a present of Henry & Linda becoming elderly, I had Angie woohoo with them again as a present. Angie woohooed Henry first, and then gotten around to Linda after a while since their lives got busy. (Both Henry & Linda survived it). After Angie woohooed Linda, he asked to be friends with her to end the romantic relationship. And soon after, I had Angie tell Henry the same.
And Henry got MAD! He's a good sim by nature (trait), nothing in his life made him mad but that news! I tried to get them to talk it out, to be friends at least, but Henry is so bitter! I don't know why he's so upset. I can only guess it's because Angie didn't ask to be friends right after he had woohooed Henry like he had with Linda. So Henry was lead on that Angie loved him.
I don't know how to fix this. Whenever I tried to get them to talk Henry would start to be mischievous or mean towards Angie! And the person icon would be red with minuses as their relationship is in the red and nearly dead.
I didn't know Henry could get so cruel whenever someone else is mean or evil to Henry, Henry gets sad from it. I don't want Henry to die being angry at Angie. How can I get them on friendly terms again?
I have the base game. I'm not against using cheats at all. Please, I don't want my sims to die from anger ever. Please be kind.
Update: Good news! Angie and Henry are on good terms again! I kept working on it and I got rid of the red in the romance bar between them! After that their romance was growing, cause I made them flirt. I had them woohoo and afterwards, Angie asked to be friends and Henry was chill about it!
So for other simmers, always make sure after woohooing to Ask to be Friends to cut off the romantic relationship between two sims, and they'll both be okay with ending romance yet still be friendly with each other.
If you waited like I did previously, then one sim can be very upset when Asked to be friends when it's been days since two had woohooed. So do it immediately, to ensure the sims won't be upset over it.
Thanks for all your help! I just played it out, and I was able to work it out without cheats. So maybe I got lucky, Idk, but it's all good again