It means, "I thought not." or, "I didn't think so."
You see that I am thinking of you.
I think somebody's in love
I think that you used to know it is an English equivalent of 'Je pense que tu le savais'.
"I though I was crying with you."
I think that you guys are my "cheri" I dont think cheri is a common word so... And it should be "Je pense que vous etes mes cheris"
I thought you were speaking in Spanish
Je pense que je tombe pour toi in French means "I think I am falling for you" in English.
I thought that you had word.
Je pense que c'est vrai - I think (that) it's true.
I think that I love this sandwich.
I think somebody's in love
Je pense que je t'aime toujours, je pense que je t'aime encore.