The definitive answer here is, Je t'aime means "I love you" in French
. So does "je t'adore". But no one says that. If you are in love with someone you say "Je t'aime".
When I was in France
a fellow American
made this mistake. She was trying to dump
a guy and be nice, so she wrote him a note that said, "Je t'aime, mais(but)..." So they guy freaked out and started hassling her, because he thought some girl had just declared her undying love for him.
It weird, I know, but If you love
someone, say "Je t'aime". If you like just like
them, say something else.