Born Under A Lucky Star

What happens when a reader transmigrates into his/her favourite novel

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Present
Me:(Holy sh*t of mine) stay away from me( you future yandare)
Him: puppy eyes I'm sorry i was scared that you will also abandon me
Me:Uggh *hugs him*no im sorry(he is still a child but ain't I one too)
Him: while still being hugged smirks then say in a sad tone you will sleep and always be with me right ?
Me:Yes i will (why does it feels like I've lost something)

10 yrs later
Him: wife you promised you will always be with me you can't back away now ..and and we even slept together so you have to take responsibility
Me:(i want to kill myself for being so stupid)

Conclusion: your world view changes
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AN:This is my original story and not a fanfiction.The cover is not mine (i googled it)