Love and saying it

How can you love someone and not say it to there face. I love grace. I have told her this inperson but mostly vea text or IM on yahoo. I haven't said it to her face in some time. Is it cus I don't want her to feel like she needs to say it back or is it that it hurts not hearing it said back? And I know she won't say it back becuase she's not ready to. Are time together is great and I have no worries but when we are apart I start getting that feeling. Like she is bidding smething or that there's something going on. I have moments were I have feeling like that when I'm around her but I dismiss them. I belive I know how honest she is and she isn't that kind of person to do that. She keeps makeing plans far out into the future. Like today. She was invited to a ren faire and it's in October. We are going together. I'm not sure if she asked me to go or I pushed my way into going but we are planing to go. I don't know where all these feelings are comeing from. I'm off the truck and shouldn't be feeling this way. It must be the fact that I quit my job and am starting a new job soon and I'm nerves about the whole thing. I have the feeling that she didn't want to be around me or my daughter today or tommirrow becuase she's doing something wrong and can't face me right away or it could be the fact that she said she hasn't been feeling her self lately and needs some time alone. I understand the time alone part. I'm just insacure from my last relationship. And I'm prabably messing this one up. Be abcause of it. I'm just straight out confused. I'm butting my tounge and just actsepting the way things are. And I should be happy. Grace is an amazing person.