I dont ruin my own sims lives but the maxis ones like the pleasants I do mwahahaha
They split up because she came home from work and he was in bed with the maid (predictably) then she got it on with his brother in law (The burb guy?) they hate eachother so much hehe also I hate it when my sims' siblings arent the best of friends but I like making the pleasant girls hate eachother!