infatuated?
The word for looking at someone or something secretly is "spying" or "peeking".
The word you are looking for is "conspire". It means to plan something secretly with others.
No secretly s an adverb, secret can be an adjective eg She has a secret friend
he is secretly in love with hinata and sakura knows naruto is in love with her
Covertly
Secretly is an adverb. It modifies verbs by providing information on how an action is performed.
yes always and forever!
It's a love-hate thing.
You can't help but feel love
tell them and see what happens
Adonis
If by secretly you meant cautiously then walking stealthily or tip toeing .