[ He can hardly even hear her words at first. He's too caught up in the realisation and shock and guilt of the moment, but then the words slowly manage to catch up to him. And even though he feels terrible and like he's been the worst to her, even though he's so shocked and worried right now, of course Mamoru's mind immediately turns to her instead. She sounds like she's feeling guilty and bad too, and his first instinct is that he has to make sure she doesn't feel that way. Especially not over this. All of it was his fault (of course it gets twisted in his mind to that), so she shouldn't suffer.

Slowly he moves to sit up again, his gaze not quite meeting hers as he struggles to find words. ]

No, I... [ He sucks in a deep breath, losing the words he'd been meaning to say yet again before he starts anew, stumbling over his sentence the entire time. ] I--.. I must've hurt you, and I probably didn't treat you right, or you were..

[ Yeah, it's just not coming out right. He just wants to apologize for it since it was all so unlike the way he is, he just wants her to be alright.

He just wants her to stop looking so sad since it makes him feel like he's falling apart right in front of her too.

Placing his hands carefully, almost nervously on her shoulders, he leans forward a little bit to gently press his lips against her own. It's a very chaste kiss, but it's meant more as a sign of comfort than anything else - it's one of the few expressions of love Mamoru can handle, if not just since he can't think of the right words to comfort her, so maybe he can at least transfer the feeling this way.

Pulling away, he still doesn't move too far away from her face, lingering instead. ]

... I love you, so.. I-.. I wish I hadn't hurt you. I'm sorry.