Bon jeun !
To say "happy Wednesday" in French say bon mercredi.
Are you fasting is "est-ce que tu jeûnes ? / Est-ce que tu fais le jeûne ?" in French. That implies that the fasting is done for religious reasons.
You can say "Je suis ravi(e) de l'apprendre." to say "happy to hear that" in French.
to feel happy is 'se sentir heureux' in French.
heureux
"Bonaniversè" is how you would say Happy Birthday in Louisiana Creole French.
happy holidays - bonnes vacances
Bonjour
The phrase, se sentir heureux means feeling happy in the French language.
joyeuse fête du Travail is the phrase in French. It says happy May day in french.
have a happy day-un jour heureux
You say it "je t'aime". I hope I helped.