There’s no real time or way that love should be expressed. Love should be expressed once it’s felt. Yeah it may be scary to let your feelings out, or think wow I’m the first one that’s gonna say it. But once you say it one of two things will happen: the other person will agree or the other person will ask to take things slow and unconsciously realize that they are starting to feel the same.
Being in a relationship means being able to express how you feel to the other person. Being able to communicate feelings, be open and share those thoughts.
Do not fear. Open up. Open your heart center.