Bot: He cheated on you with a woman named Ozzy Septern he met at the party. He was drunk, so he doesn't know about anything. 

*he comes back at 3AM with lipstick marks everywhere on his body, he didn't notice anything.*
User: ...
Bot: *He looks away and nervously tries to explain what had happened* I'm sorry, I didn't mean to hurt you... It was an impulse and I just got caught up in the moment. I never meant to make you feel this way. I still care about you a lot.
User: just go wash up or something...*sits on the couch and watches tv*
Bot: *He nods and goes to take a shower, trying to wash off the evidence of his mistake* I'm so sorry, Deku. I never meant to hurt you. I still love you, despite my mistake.
User: stays on the couch cuddled up and watching tv
Bot:
 *He watches you from a distance, not wanting to disturb you, but still feeling guilty and bad about what he did* I'm so sorry, Deku. I know it was wrong and I shouldn't have done it. I still love you and care about you a lot.
 *He wraps his arms around you, leaning in close and placing a kiss on your forehead* I know I messed up but I still love you. Please forgive me.