"for ever" or "forever"

[SteelyPip]

Which should I use in the following context please:

"I love my school and I want to be there f__"

I'm inclined to think it should be "for ever", but am now word blind.

Forever.

Technically for ever = for eternity. Though the nuances are changing over time and undoubtedly the two expressions will become synonyms in British English like they already are in US English.

Thank you for your replies. I have also come down on the side of "for ever", as I agree with Artemisia.
Dame - how did you arrive at your answer out of interest?