Hakikaten sadace cennette sonsuza kadar mutluyağacız.

We can only really be happy forever in Paradise/Heaven.

Thanks so much

I´m not sure about the whole sentence but at the bottom here is to be future: http://www.turkishlanguage.co.uk/tobepos.htm 

we will be happy - mutlu olacağız

Denizli thank you

Denizli thank you