je t'aimerai longtemps.
Il y a longtemps que je t'aime
You can say "Cela fait longtemps" to convey the phrase "It has been a long time" in French.
You say "j'aime le français" to say "I love French" in French.
love in french is "amour".
To say "I love him/her" in French, you say: "Je l'aime"
You can say "Je l'aime" to say "I love him" or "I love her" in French.
in love in French is "amoureux de".
to love is translated 'aimer' in French
je t'aimerai jusqu'Ã la fin des temps
il y a longtemps
I love it is "j'aime / j'aime ça" in French.
"and her love" is ".. et son amour" in French.