First you should be careful. How long have you been dating this person? If it's been for a short amount of time like 6 months then don't say it. See how your partner feels about you. Is he/she very affectionate towards you, does he/she call you just to see how your doing? Be sure your confident that your partner loves you before you tell him/her that you love them. Also be sure to say it AFTER a date so it will seem like the perfect end to a perfect date. It's nice to also kiss your partner after saying so but only if they say they love you back.
complement her then say i love you
Opinionif you love her than yes say you love her
I love you?
Both of you should say it when you guys feel like you love that person.
Say "I love you" back if you love him. If you don't say, "I love you as a friend."
I think you should say you love her back
when you say "i love you" it has a meaning! i love you is a sign of saying , i need you and i want to be with you forever.
You can say either
you can say i love you to you sister or brother just as well you can say i love you to your girlfriend. i am in love with you is separate and usually for your significant other.
that it is over b/c he should love u
i love you
A simple "I love you" should be all that you need to say.