[X] Go home, cuddle, make sure Mami has her homework covered if she has any.
[X] Explain to Mami, at length:
-[X] What you feel she's done for you.
-[X] That in the process of doing it for you, you've been brought to understand that you enjoy being with her.
-[X] That at the start of all of this, you might have been okay with just making sure she got a happy ending, but that you have come to actively want to be around her: not just for her sake, but for your own happiness.
--[X] That this is what she has done for you: she showed you what it was to have a life, to have happiness of your own. You'd thought it was okay if you ended up alone in the end... You don't want to be alone.
--[X] Do it without making her freak out, or, worse, think that we're going to leave her. No repeats of the metabomb fiasco.