This is my take on the episode '99 Problems'.
"Sam!" Rina shouts in surprise with a huge smile on her face when she opens her apartment door. She instantly leaps through the doorway and wraps her arms around him. "What are you doing here!?"
"Hi, Rina," he says back as he hugs her also, instantly feeling some small relief rush through him with the contact. His voice is low and he couldn't hide the sorrow in it if he tried. He's too tired and too broken to attempt to look happy anyways.
"What's going on?" she says backing up to look at him, big grin still glowing, when her dog Rui pops his head out the door and wedges himself in between Rina and the doorway to see who was there.
"Hey Rui," Sam greets to the docile animal as he crouches down to pet him. "How you doing buddy?"
"He's fine," Rina assures. "Just got back from a long walk so he's one happy puppy right now."
"Good," Sam says with a fake smile as he stands back up and echoes himself when he isn't sure what to say. "Good."
It's then that Rina really sees his face and the expression on it for the first time. Something's up.
"Sam, you didn't come all the way here to visit with Rui, did you?" she asks while taking his hand in hers. "You alright?"
"No, not really," he admits while looking at their hands held together.
"Well, what is it?" she asks of him, growing more concerned by the second.
Sam just shakes his head, unsure of where to even begin. With the decision he's recently made he's about to change his life… or end it, really… and how does one start to explain that?
"What's happening?" Rina asks again with his silence.
"Look, I have no delusions," Sam starts to explain what he can in a sad tone. "I know the life that I live, what it's about, and now… I know for certain how that's gonna end for me. And I'm okay with that. But… I needed you to know… that when I do see myself happy… it's with you."
"That's sweet, Sam…"
"And you don't have to say anything to that," Sam assures her, not looking for a return of sentiments if it isn't the same for her. "I just wanted, needed, to tell you that."
"Don't be silly," Rina tells him. "You make me happy too. Very happy, actually." When she grins up to him as she confirms how she feels about him, she worries even more when the forced smile on his face never seems to make its way to his eyes. "Why don't you come inside and talk to me about whatever this is."
"I wish I could." It kills him to say no to her but staying is a bad idea. If he goes in there he won't leave and do what he now knows he has to. He's sure that he won't ever be able to leave her again if he stays for even a second more than he has to. His pull to her is just too strong. "I just had to see you one more time." He takes back his hand. "Be careful, Rina." Sam turns to leave.
"No, wait!" Rina calls to him and grabs his arm to stop him. "Wait! You aren't just going to get all mysterious on me like that and then leave. What is going on? Stay for a second and talk to me."
"I'm sorry," Sam says, his face showing the pain he feels. "I'm so sorry, Rina. But I don't have a choice."
"You do. You have a choice. You always have a choice," Rina insists as she's becoming desperate. Something is seriously wrong and if he leaves she fears the worst for him. He has to stay, she has to get some time in with him as it's feeling like this is it. If he leaves he isn't ever coming back. "You can choose to come inside. We can talk."
"Rina, wait a minute," Sam stops her as she tries to pull him towards her door. "Look, things are about to get really bad."
"I know," she reminds him. "I know everything that already happened. Lizzy told me. So come in and tell me about what's been happening since then."
"I can't," Sam nearly pleads with her. "The Apocalypse is here and the next few days, what you're gonna see on TV, it's gonna be really bad. Beyond scary. But I don't want you to worry, not at all. I'm making the right decision and it'll all be fixed. I'm going to set it right."
"What do you mean!?" Rina nearly shouts at him. "What are you talking about? What are you about to do, Sam!?" He just looks down at her, brow furrowed as he watches the tears collect along the bottom lid of her eyes.
He can't answer her. He can't let her know what he's about to do. He hasn't even told his brother just yet.
"You're scaring me, Sam," she chokes out with how serious this situation clearly is.
"I'm not trying to do that, not at all," Sam tells her, taking one of her hands in both of his. Hers are so much smaller that he envelopes it easily. "But there are some things I have to go do…."
"Well whatever it is, don't." She's trying her best here. "Don't do it. You've done enough good. Be happy instead, let someone else do all the dirty work for once. Stay here."
"I… can't do that. I have to go. No one else can do what I have to do."
"Then just stay with me for an hour. Just one hour." Rina pleads, her free hand to his cheek. "Let me have that. I think I deserve that… don't I?"
Sam just looks at her, his heart torn to shreds with how badly she's trying.
"You'll never let me go if I stay," Sam smiles slightly before his grin dissipates, knowing her well enough.
"You have my word that I will," Rina forces herself to say. If this is the only way she can get him to stay with her for just a little while longer then she'll do it. "One hour to the minute… I let you out the door. Just not a second before then."
Sam closes his eyes with how difficult it is to refuse this offer. "It's harder that way. Too hard," he assures after thinking it through. He lets go of her hand and takes her other one off of his cheek gently. "It's better if I don't."
"Sam, please…" Rina attempts one more time.
"I know myself," Sam says. "I know what I've always wanted from life and if I stay even for that hour… you wouldn't have to force me to stay for good. I'll just do it and…" He sighs, his brow furrowing as he bits back the sorrow. "I have to fix my mistakes. This whole thing is my fault and I can't have a normal, happy life knowing that. I have to set it all right."
Sam leans down and kisses her lips gently, the tears falling down her face as she closes her eyes. Without backing away, he says, "Thank you for being everything I have ever needed."
Standing tall, Sam doesn't give himself the time to stay there and think about anything… or even wait to hear her say goodbye back. He walks straight for the Impala and gets in, driving away from her before his better judgment and want for her makes him stay. He can't stay. He has the world to save and he knows he isn't going to survive it. He's taking Lucifer down with him in one final blaze of insanity and Rina can't have anything to do with that.